CVE-2026-25656: Siemens Sinec Nms

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3), User Management Component (UMC) (All versions < V2.15.2.1). The affected application permits improper modification of a configuration file by a low-privileged user. This could allow an attacker to load malicious DLLs, potentially leading to arbitrary code execution with SYSTEM privileges.(ZDI-CAN-28108)

Affected products

• Siemens Sinec Nms: affected versions not specified
• Siemens User Management Component: before 2.15.2.1 (fixed in 2.15.2.1)

Published 2026-02-10. Last modified 2026-06-17.