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Vulnerability record · CVE-2025-40736 · published 8 July 2025

CVE-2025-40736: Siemens sinec nms missing authentication for critical function vulnerability

Siemens · Sinec Nms

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).

9.3 CVSS 4.0 Critical EPSS 0.40% · top 68.2% CWE-306 · Missing authentication for critical function
9.3CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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).

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/html/ssa-078892.html Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-40736), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.