CVE-2023-42797

highpriority · track · 29EPSS 0.005 · 45 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.55% (45th) EPSS

CVSS 7.2 · high

Is it mine?

12 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-24

A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05.20), CP-8050 MASTER MODULE (All versions < CPCI85 V05.20). The network configuration service of affected devices contains a flaw in the conversion of ipv4 addresses that could lead to an uninitialized variable being used in succeeding validation steps. By uploading specially crafted network configuration, an authenticated remote attacker could be able to inject commands that are executed on the device with root privileges during device startup.

remediations

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

A vendor fix is available.

FixedCP-8031 MASTER MODULE (6MF2803-1AA00)siemens_psirt
Update to CPCI85 V05.20 or later version
FixedCP-8050 MASTER MODULE (6MF2805-0AA00)siemens_psirt
Update to CPCI85 V05.20 or later version
FixedCP-8031 MASTER MODULE (6MF2803-1AA00)cisa_csaf_ot
Update to CPCI85 V05.20 or later version
FixedCP-8050 MASTER MODULE (6MF2805-0AA00)cisa_csaf_ot
Update to CPCI85 V05.20 or later version
MitigationCP-8031 MASTER MODULE (6MF2803-1AA00)siemens_psirt
Review the list of users that are allowed to modify the network configuration and apply strong passwords
MitigationCP-8050 MASTER MODULE (6MF2805-0AA00)siemens_psirt
Review the list of users that are allowed to modify the network configuration and apply strong passwords
MitigationCP-8031 MASTER MODULE (6MF2803-1AA00)cisa_csaf_ot
Review the list of users that are allowed to modify the network configuration and apply strong passwords
MitigationCP-8050 MASTER MODULE (6MF2805-0AA00)cisa_csaf_ot
Review the list of users that are allowed to modify the network configuration and apply strong passwords

cvss

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

7.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–7.2

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9

v3.16.6mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · CISA US

v3.17.2highAV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.6mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · ENISA EU

v3.16.6mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · productcert@siemens.com DEexploitability 0.7 · impact 5.9

v3.16.6mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.16.6mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-908USCWE-908USCWE-908USCWE-908US

affected products (12)

Products and version ranges known to be affected.

CP-8031 MASTER MODULE (6MF2803-1AA00)all versionscisa_csaf_otUS
CP-8050 MASTER MODULE (6MF2805-0AA00)all versionscisa_csaf_otUS
Siemens CP-8031 MASTER MODULE (6MF2803-1AA00)< CPCI85_V05.20cisa_csaf_otUS
Siemens CP-8050 MASTER MODULE (6MF2805-0AA00)< CPCI85_V05.20cisa_csaf_otUS
Siemens CP-8031 MASTER MODULEAll versions → CPCI85 V05.20enisa_euvdEU
Siemens CP-8050 MASTER MODULEAll versions → CPCI85 V05.20enisa_euvdEU
Siemens AG CP-8031 MASTER MODULE≤ CPCI85 05.20fstec_bduRU
Siemens AG CP-8050 MASTER MODULE≤ CPCI85 05.20fstec_bduRU
siemens sicam a8000 cp-8031 firmware< 05.20nvdUScpe:2.3:o:siemens:sicam_a8000_cp-8031_firmware:*:*:*:*:*:*:*:*
siemens sicam a8000 cp-8050 firmware< 05.20nvdUScpe:2.3:o:siemens:sicam_a8000_cp-8050_firmware:*:*:*:*:*:*:*:*
Siemens CP-8031 MASTER MODULE (6MF2803-1AA00)≤ All versions < CPCI85 V05.20siemens_psirtDE
Siemens CP-8050 MASTER MODULE (6MF2805-0AA00)≤ All versions < CPCI85 V05.20siemens_psirtDE

advisories (3)

Vendor and ecosystem advisories describing this.

SSA-583634SSA-583634: Command Injection Vulnerability in the CPCI85 Firmware of SICAM A8000 Devices2024-01-09csaf · siemens_psirtDE
The CPCI85 firmware of SICAM A8000 CP-8031 and CP-8050 is affected by a command injection vulnerability that could allow an authenticated remote attacker to inject commands that are executed on the device with root privileges during device startup. Siemens has released new versions for the affected products and recommends to update to the latest versions.
WID-SEC-W-2024-0030Siemens SICAM A8000: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit AdministratorrechtenDeutsch2024-01-09csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Siemens SICAM A8000 ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen.
ICSA-24-011-08Siemens SICAM A80002024-01-09icsa · cisa_csaf_otUS
The CPCI85 firmware of SICAM A8000 CP-8031 and CP-8050 is affected by a command injection vulnerability that could allow an authenticated remote attacker to inject commands that are executed on the device with root privileges during device startup. Siemens has released new versions for the affected products and recommends to update to the latest versions.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd siemens_psirt cert_bund NVD CVE.org MITRE

published 2024-01-09modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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