CVE-2021-41991

mediumpriority · track · 32EPSS 0.053 · 93 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

5.30% (93rd) EPSS

CVSS 5 · medium

Is it mine?

201 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedRUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedRUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M804PB (6GK5804-0AP00-2AA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M874-2 (6GK5874-2AA00-2AA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M874-3 (6GK5874-3AA00-2AA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE S615 (6GK5615-0AA00-2AA2)siemens_psirt
Update to V7.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109807276/
FixedSCALANCE SC622-2C (6GK5622-2GS00-2AC2)siemens_psirt
Update to V2.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109805907/
FixedSCALANCE SC632-2C (6GK5632-2GS00-2AC2)siemens_psirt
Update to V2.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109805907/
FixedSCALANCE SC636-2C (6GK5636-2GS00-2AC2)siemens_psirt
Update to V2.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109805907/
FixedSCALANCE SC642-2C (6GK5642-2GS00-2AC2)siemens_psirt
Update to V2.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109805907/
FixedSCALANCE SC646-2C (6GK5646-2GS00-2AC2)siemens_psirt
Update to V2.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109805907/
FixedSIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0)siemens_psirt
Update to V3.3.46 or later version
https://support.industry.siemens.com/cs/ww/en/view/109812218/
FixedSIMATIC CP 1243-1 (6GK7243-1BX30-0XE0)siemens_psirt
Update to V3.3.46 or later version
https://support.industry.siemens.com/cs/ww/en/view/109812218/
FixedSIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0)siemens_psirt
Update to V3.3.46 or later version
https://support.industry.siemens.com/cs/ww/en/view/109812218/
FixedSIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0)siemens_psirt
Update to V3.3.46 or later version
https://support.industry.siemens.com/cs/ww/en/view/109812218/
FixedSIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0)siemens_psirt
Update to V3.3.46 or later version
https://support.industry.siemens.com/cs/ww/en/view/109812218/
FixedSIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0)siemens_psirt
Update to V2.2.28 or later version
https://support.industry.siemens.com/cs/ww/en/view/109817067/
FixedSIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0)siemens_psirt
Update to V2.2.28 or later version
https://support.industry.siemens.com/cs/ww/en/view/109817067/
FixedSIMATIC CP 1543-1 (6GK7543-1AX00-0XE0)siemens_psirt
Update to V3.0.22 or later version
https://support.industry.siemens.com/cs/ww/en/view/109808678/
FixedSIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0)siemens_psirt
Update to V2.2.28 or later version
https://support.industry.siemens.com/cs/ww/en/view/109817067/
FixedSIMATIC CP 1545-1 (6GK7545-1GX00-0XE0)siemens_psirt
Update to V1.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109811116/
FixedSINEMA Remote Connect Serversiemens_psirt
Update to V3.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109811169/
FixedSIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0)siemens_psirt
Update to V2.2.28 or later version
https://support.industry.siemens.com/cs/ww/en/view/109817067/
FixedSIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0)siemens_psirt
Update to V2.2.28 or later version
https://support.industry.siemens.com/cs/ww/en/view/109817067/
FixedSIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0)siemens_psirt
Update to V2.2.28 or later version
https://support.industry.siemens.com/cs/ww/en/view/109817067/
FixedSIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0)siemens_psirt
Update to V3.3.46 or later version
https://support.industry.siemens.com/cs/ww/en/view/109812218/
FixedSIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0)siemens_psirt
Update to V3.0.22 or later version
https://support.industry.siemens.com/cs/ww/en/view/109808678/
FixedSIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0)siemens_psirt
Update to V3.3.46 or later version
https://support.industry.siemens.com/cs/ww/en/view/109812218/
FixedSIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0)siemens_psirt
Update to V3.3.46 or later version
https://support.industry.siemens.com/cs/ww/en/view/109812218/
MitigationSIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIMATIC CP 1243-1 (6GK7243-1BX30-0XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIMATIC CP 1543-1 (6GK7543-1AX00-0XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIMATIC CP 1545-1 (6GK7545-1GX00-0XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0)siemens_psirt
Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M804PB (6GK5804-0AP00-2AA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M874-2 (6GK5874-2AA00-2AA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M874-3 (6GK5874-3AA00-2AA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE S615 (6GK5615-0AA00-2AA2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE SC622-2C (6GK5622-2GS00-2AC2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE SC632-2C (6GK5632-2GS00-2AC2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE SC636-2C (6GK5636-2GS00-2AC2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE SC642-2C (6GK5642-2GS00-2AC2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SCALANCE SC646-2C (6GK5646-2GS00-2AC2)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SINEMA Remote Connect Servercisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
MitigationSiemens SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0)cisa_csaf_ot
(CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-190USprimaryCWE-190USCWE-190USCWE-190US

affected products (201)

Products and version ranges known to be affected.

Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Siemens Siemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M804PB (6GK5804-0AP00-2AA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M874-2 (6GK5874-2AA00-2AA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M874-3 (6GK5874-3AA00-2AA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1): <V7.1all versionscisa_csaf_otUS
Siemens Siemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1): <V7.1all versionscisa_csaf_otUS

showing 20 of 201

advisories (3)

Vendor and ecosystem advisories describing this.

SSA-539476SSA-539476: Siemens SIMATIC NET CP, SINEMA and SCALANCE Products Affected by Vulnerabilities in Third-Party Component strongSwan2022-02-08csaf · siemens_psirtDE
Vulnerabilities in the third-party component strongSwan could allow an attacker to cause a denial of service (DoS) condition in affected devices by exploiting integer overflow bugs. Siemens has released updates for the affected products and recommends to update to the latest versions.
WID-SEC-W-2024-1024strongSwan: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2021-10-18csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in strongSwan ausnutzen, um einen Denial of Service Angriff durchzuführen.
ICSA-25-259-03Siemens SIMATIC NET CP, SINEMA and SCALANCE2025-09-16icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of-service (DoS) condition in the affected devices by exploiting integer overflow bugs.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund cisa_csaf_ot siemens_psirt NVD CVE.org MITRE

published 2021-10-18modified 2026-06-17

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+4644 more

references (32)

External citations — patches, advisories, analysis.

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