CVE-2025-40736 Missing authorization in SINEC NMS
An unauthenticated attacker can reset the superadmin password via an exposed endpoint, gaining full control of the SINEC NMS application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-40736?
CVE-2025-40736 is a critical missing authorization vulnerability in Siemens SINEC NMS, published on 8 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in SINEC NMS (All versions < V4.0). The affected application exposes an endpoint that allows an unauthorized modification of administrative credentials. This could allow an unauthenticated attacker to reset the superadmin password and gain full control of the application (ZDI-CAN-26569).
Weakness: CWE-306
Which versions are affected by CVE-2025-40736?
It affects 1 product.
Products include Siemens Sinec Nms.
How do I fix CVE-2025-40736?
No fix has been published for CVE-2025-40736 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-40736 being exploited?
There is no known exploitation of CVE-2025-40736 in the wild and no public exploit code.
Other vulnerabilities in Siemens SINEC NMS
Sources
Also known as GHSA-5w39-m9v9-2j2j.