ZDI 2026-02-25

ZDI-26-132: Siemens SINEC NMS Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

CVE-2026-25656

Machine-generated analysis · WAYSCloud LLM

The vulnerability stems from uncontrolled search path behavior in Siemens SINEC NMS, allowing local privilege escalation when low-privileged code execution is already achieved.

Context

Siemens SINEC NMS is affected by a local privilege escalation vulnerability. The issue is due to an uncontrolled search path element, which can be exploited by a local attacker who has already gained execution of low-privileged code. The advisory notes a CVSS score of 7.8, indicating a medium to high severity impact. Worth noting is that exploitation requires prior access to execute code on the system.

Operator considerations

Check: Inventory systems running Siemens SINEC NMS for exposure to untrusted local users.

From Zero Day Initiative ↗

This vulnerability allows local attackers to escalate privileges on affected installations of Siemens SINEC NMS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-25656.

Read the full advisory on ZDI →