CVE-2025-40795

criticalPriorität · verfolgen · 0EPSS 0.007 · 54. PerzentilDEEUNLUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.72% (54th) EPSS
CVSS 9.8 · critical
Is it mine?
30 products
Prüfe deine Angriffsfläche
Who says so?
5 sources
cnnvd · enisa_euvd · cisa_csaf_ot · ncsc_nl

EPSS · bewertet 2026-10-27

A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SIMATIC PCS neo V6.0 (All versions < V6.0 SP1 Update 1), User Management Component (UMC) (All versions < V2.15.1.3). Affected products contain a stack-based buffer overflow vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to execute arbitrary code or to cause a denial of service condition.

01

Behebungen

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

Ein Hersteller-Fix ist verfügbar.

  • BehobenSIMATIC PCS neo V6.0siemens_psirt

    Update to V6.0 SP1 Update 1 or later version

    https://support.industry.siemens.com/cs/ww/en/view/110000357/
  • BehobenUser Management Component (UMC)siemens_psirt

    Update to V2.15.1.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109991261/
  • BehobenSIMATIC PCS neo V6.0cisa_csaf_ot

    Update to V6.0 SP1 Update 1 or later version

    https://support.industry.siemens.com/cs/ww/en/view/110000357/
  • BehobenUser Management Component (UMC)cisa_csaf_ot

    Update to V2.15.1.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109991261/
  • MitigationSIMATIC PCS neo V4.1siemens_psirt

    In non-networked scenarios/deployments block TCP ports 4002 and 4004 on machines with UMC installed. If the deployment is not using the 'RT Server' type of UMC machine, port 4004 can be blocked everywhere without impacting network functionality for all other UMC machine-types (Server, Ring-Server, Agent).

  • MitigationSIMATIC PCS neo V5.0siemens_psirt

    In non-networked scenarios/deployments block TCP ports 4002 and 4004 on machines with UMC installed. If the deployment is not using the 'RT Server' type of UMC machine, port 4004 can be blocked everywhere without impacting network functionality for all other UMC machine-types (Server, Ring-Server, Agent).

  • MitigationSIMATIC PCS neo V6.0siemens_psirt

    In non-networked scenarios/deployments block TCP ports 4002 and 4004 on machines with UMC installed. If the deployment is not using the 'RT Server' type of UMC machine, port 4004 can be blocked everywhere without impacting network functionality for all other UMC machine-types (Server, Ring-Server, Agent).

  • MitigationUser Management Component (UMC)siemens_psirt

    In non-networked scenarios/deployments block TCP ports 4002 and 4004 on machines with UMC installed. If the deployment is not using the 'RT Server' type of UMC machine, port 4004 can be blocked everywhere without impacting network functionality for all other UMC machine-types (Server, Ring-Server, Agent).

  • MitigationSIMATIC PCS neo V4.1cisa_csaf_ot

    In non-networked scenarios/deployments block TCP ports 4002 and 4004 on machines with UMC installed. If the deployment is not using the 'RT Server' type of UMC machine, port 4004 can be blocked everywhere without impacting network functionality for all other UMC machine-types (Server, Ring-Server, Agent).

  • MitigationSIMATIC PCS neo V5.0cisa_csaf_ot

    In non-networked scenarios/deployments block TCP ports 4002 and 4004 on machines with UMC installed. If the deployment is not using the 'RT Server' type of UMC machine, port 4004 can be blocked everywhere without impacting network functionality for all other UMC machine-types (Server, Ring-Server, Agent).

  • MitigationSIMATIC PCS neo V6.0cisa_csaf_ot

    In non-networked scenarios/deployments block TCP ports 4002 and 4004 on machines with UMC installed. If the deployment is not using the 'RT Server' type of UMC machine, port 4004 can be blocked everywhere without impacting network functionality for all other UMC machine-types (Server, Ring-Server, Agent).

  • MitigationUser Management Component (UMC)cisa_csaf_ot

    In non-networked scenarios/deployments block TCP ports 4002 and 4004 on machines with UMC installed. If the deployment is not using the 'RT Server' type of UMC machine, port 4004 can be blocked everywhere without impacting network functionality for all other UMC machine-types (Server, Ring-Server, Agent).

  • Kein Fix geplantSIMATIC PCS neo V4.1siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIMATIC PCS neo V5.0siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIMATIC PCS neo V4.1cisa_csaf_ot

    Currently no fix is planned

  • Kein Fix geplantSIMATIC PCS neo V5.0cisa_csaf_ot

    Currently no fix is planned

02

cvss

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

9.8
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · high–critical · 8.1–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · productcert@siemens.com DEAusnutzbarkeit 3.9 · Auswirkung 5.9
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Siemens ProductCERT DE
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL
v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · productcert@siemens.com DE
v4.08.1highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
03

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Trackcoordinatorcisa_ssvcUS
04

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-121USCWE-121USCWE-121USCWE-121US
05

betroffene Produkte (30)

Betroffene Produkte und Versionsbereiche.

20 von 30 angezeigt
06

Advisories (3)

Hersteller- und Ökosystem-Meldungen dazu.

  • NCSC-2025-0274Kwetsbaarheden verholpen in Siemens productenNL2025-09-09csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als Apogee, Industial Edge, RUGGEDCOM, SIMATIC, SIMOTION en SINAMICS.

  • SSA-722410SSA-722410: Multiple Vulnerabilities in User Management Component (UMC)2025-09-09csaf · siemens_psirtDE

    Siemens' User Management Component (UMC) is affected by multiple vulnerabilities that could allow an unauthenticated remote attacker to execute arbitrary code or to cause a denial of service condition. Siemens has released a new version for User Management Component (UMC) and recommends to update to the latest version. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.

  • ICSA-25-254-07Siemens User Management Component (UMC)2025-09-09icsa · cisa_csaf_otUS

    Siemens' User Management Component (UMC) is affected by multiple vulnerabilities that could allow an unauthenticated remote attacker to execute arbitrary code or to cause a denial of service condition. Siemens has released a new version for User Management Component (UMC) and recommends to update to the latest version. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.

07

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdcisa_csaf_otncsc_nlsiemens_psirtNVDCVE.orgMITRE
veröffentlicht 2025-09-09geändert 2026-10-23
09

Referenzen (5)

Externe Belege — Patches, Meldungen, Analysen.

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