Main Vulnerability Database Vulnerabilities #VU115169

Stack-based buffer overflow in SIMATIC PCS neo and User Management Component (UMC) - CVE-2025-40795

Published: September 12, 2025

Vulnerability identifier: #VU115169

CSH Severity: High

CVSS v4: 9.3 [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]

CVE-ID: CVE-2025-40795

CWE-ID: CWE-121

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the integrated UMC component. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

SIMATIC PCS neo
User Management Component (UMC)

How to mitigate CVE-2025-40795

Install updates from vendor's website.

User Management Component (UMC) - update to 2.15.1.3

External References

Related Security Bulletins