CVE-2020-28393

highPriorität · verfolgen · 31EPSS 0.016 · 76. PerzentilDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.63% (76th) EPSS

CVSS 7.1 · high

Is it mine?

18 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · bewertet 2026-10-27

An unauthenticated remote attacker could create a permanent denial-of-service condition by sending specially crafted OSPF packets. Successful exploitation requires OSPF to be enabled on an affected device on the SCALANCE XM-400, XR-500 (All versions prior to v6.4).

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

BehobenSCALANCE XM-400 familysiemens_psirt
Update to V6.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109796319/
BehobenSCALANCE XR-500 familysiemens_psirt
Update to V6.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109796317/
BehobenSCALANCE XM-400 familycisa_csaf_ot
Update to V6.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109796319/
BehobenSCALANCE XR-500 familycisa_csaf_ot
Update to V6.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109796317/
MitigationSCALANCE XM-400 familysiemens_psirt
Disable OSPF in the layer 3 configuration menu (note that OSPF is disabled by default). The vulnerability is not exploitable, when OSPF is disabled.
MitigationSCALANCE XR-500 familysiemens_psirt
Disable OSPF in the layer 3 configuration menu (note that OSPF is disabled by default). The vulnerability is not exploitable, when OSPF is disabled.
MitigationSCALANCE XM-400 familycisa_csaf_ot
Disable OSPF in the layer 3 configuration menu (note that OSPF is disabled by default). The vulnerability is not exploitable, when OSPF is disabled.
MitigationSCALANCE XR-500 familycisa_csaf_ot
Disable OSPF in the layer 3 configuration menu (note that OSPF is disabled by default). The vulnerability is not exploitable, when OSPF is disabled.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.9–7.5

v2.07.1highAV:N/AC:M/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USAusnutzbarkeit 8.6 · Auswirkung 6.9

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

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 · CISA US

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)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-682USCWE-682USCWE-682US

betroffene Produkte (18)

Betroffene Produkte und Versionsbereiche.

SCALANCE XM-400 familyalle Versionencisa_csaf_otUS
SCALANCE XR-500 Familyalle Versionencisa_csaf_otUS
Siemens SCALANCE XM-400 family< V6.4cisa_csaf_otUS
Siemens SCALANCE XR-500 family< V6.4cisa_csaf_otUS
n/a SCALANCE XM-400, XR-500≤ All versions prior to v6.4enisa_euvdEU
siemens scalance xm-400 firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xm-400_firmware:*:*:*:*:*:*:*:*
siemens scalance xm408-4c firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xm408-4c_firmware:*:*:*:*:*:*:*:*
siemens scalance xm408-4c l3 firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xm408-4c_l3_firmware:*:*:*:*:*:*:*:*
siemens scalance xm408-8c firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xm408-8c_firmware:*:*:*:*:*:*:*:*
siemens scalance xm408-8c l3 firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xm408-8c_l3_firmware:*:*:*:*:*:*:*:*
siemens scalance xm416-4c firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xm416-4c_firmware:*:*:*:*:*:*:*:*
siemens scalance xm416-4c l3 firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xm416-4c_l3_firmware:*:*:*:*:*:*:*:*
siemens scalance xr524 firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xr524_firmware:*:*:*:*:*:*:*:*
siemens scalance xr526 firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xr526_firmware:*:*:*:*:*:*:*:*
siemens scalance xr528 firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xr528_firmware:*:*:*:*:*:*:*:*
siemens scalance xr552 firmware< 6.4nvdUScpe:2.3:o:siemens:scalance_xr552_firmware:*:*:*:*:*:*:*:*
Siemens SCALANCE XM-400 family< V6.4siemens_psirtDE
Siemens SCALANCE XR-500 family< V6.4siemens_psirtDE

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

SSA-116379SSA-116379: Denial-of-Service Vulnerability in OSPF Packet Handling of SCALANCE XM-400 and XR-500 Devices2021-05-11csaf · siemens_psirtDE
SCALANCE XM-400 and XR-500 devices contain a vulnerability in the OSPF protocol implementation that could allow an unauthenticated remote attacker to create a permanent denial-of-service condition. Siemens has released updates for the affected products and recommends to update to the latest versions.
ICSA-21-131-10Siemens SCALANCE XM-400 and XR-500 Devices2021-05-11icsa · cisa_csaf_otUS
SCALANCE XM-400 and XR-500 devices contain a vulnerability in the OSPF protocol implementation that could allow an unauthenticated remote attacker to create a permanent denial-of-service condition. Siemens has released updates for the affected products and recommends to update to the latest versions.

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd cisa_csaf_ot nvd siemens_psirt NVD CVE.org MITRE

veröffentlicht 2021-05-12geändert 2026-06-17

Referenzen (8)

Externe Belege — Patches, Meldungen, Analysen.

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