CVE-2025-40795

State: Published
Severity: 9.3 Critical
Published: Sep 9, 2025
Updated: Jun 9, 2026
Reserved: Apr 16, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	siemens
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	siemens

Weaknesses

CWE-121 Stack-based Buffer Overflow

Affected Products

Product	Versions
SIMATIC PCS neo V4.1Siemens	all versionsAffected
SIMATIC PCS neo V5.0Siemens	all versionsAffected
SIMATIC PCS neo V6.0Siemens	before V6.0 SP1 Update 1Affected
User Management Component (UMC)Siemens	before V2.15.1.3Affected

References

https://cert-portal.siemens.com/productcert/html/ssa-722410.html

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