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TI-2026-20755 Aliases CVE-2026-25656GHSA-43rq-xvwq-hp7q

Uncontrolled search path in Siemens SINEC NMS

Priority LOW 38CWE-427Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-427.

Summary

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)

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00264 18th percentileScored 2026-11-07
Fix Fixed SINEC NMS (Siemens): V4.0 SP3User Management Component (UMC) (Siemens): V2.15.2.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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 V4.0 SP3V4.0 SP3Patch availableCNA
SiemensUser Management Component (UMC)before V2.15.2.1V2.15.2.1Patch availableCNA
  • SINEC NMS VendorSiemens Affected before V4.0 SP3 Fixed in V4.0 SP3 Patch available CNA
  • User Management Component (UMC) VendorSiemens Affected before V2.15.2.1 Fixed in V2.15.2.1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:siemens:sinec_nms:-:*:*:*:*:*:*:*not specified by NVDVulnerableSiemens
cpe:2.3:a:siemens:user_management_component:*:*:*:*:*:*:*:*before 2.15.2.1VulnerableSiemens
  • cpe:2.3:a:siemens:sinec_nms:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
  • cpe:2.3:a:siemens:user_management_component:*:*:*:*:*:*:*:* Versions before 2.15.2.1 Vulnerable ·Siemens

Remediation

  • Fix · CNA SINEC NMS (Siemens) Fixed in V4.0 SP3
  • Fix · CNA User Management Component (UMC) (Siemens) Fixed in V2.15.2.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25656
  2. 2026-10-03 Alias added: GHSA-43rq-xvwq-hp7q

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