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TI-2025-27204 Aliases CVE-2025-40736GHSA-5w39-m9v9-2j2j

Missing authentication in Siemens SINEC NMS

Priority MEDIUM 48CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00456 39th percentileScored 2026-11-07
Fix Fixed SINEC NMS (Siemens): V4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SiemensSINEC NMSbefore V4.0V4.0Patch availableCNA
  • SINEC NMS VendorSiemens Affected before V4.0 Fixed in V4.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:siemens:sinec_nms:*:*:*:*:*:*:*:*before 4.0VulnerableSiemens
  • cpe:2.3:a:siemens:sinec_nms:*:*:*:*:*:*:*:* Versions before 4.0 Vulnerable ·Siemens

Remediation

  • Fix · CNA SINEC NMS (Siemens) Fixed in V4.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Siemens SINEC NMS V4.0

    4 records Highest priority Priority MEDIUM 4 MEDIUM

    Other records, highest priority first

    • TI-2025-27206 Path traversal in Siemens SINEC NMSPriority MEDIUM 54
    • TI-2025-27205 Path traversal in Siemens SINEC NMSPriority MEDIUM 54
    • TI-2025-27203 SQL injection in Siemens SINEC NMSPriority MEDIUM 40
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-40736
  2. 2026-10-03 Alias added: GHSA-5w39-m9v9-2j2j

References

Advisory 1

  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2021-16656 ap_escape_quotes buffer overflow CVSS 3.1CRITICAL 9.8
  • TI-2021-13795 NULL pointer dereference in httpd core CVSS 3.1HIGH 7.5
  • TI-2021-02413 NULL pointer deref in signature_algorithms processing CVSS 3.1MEDIUM 5.9
  • TI-2021-13105 SQL injection in Siemens SINEC NMS CVSS 3.1HIGH 7.2
See all 41 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences