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TI-2025-21513 Aliases CVE-2025-30174GHSA-c22p-h6j4-33wp

Out-of-bounds read in Siemens SIMATIC PCS neo V4.1

Priority MEDIUM 45CWE-125Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SINEC NMS (All versions < V4.0), SINEMA Remote Connect (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (All versions), Totally Integrated Automation Portal (TIA Portal) V18 (All versions), Totally Integrated Automation Portal (TIA Portal) V19 (All versions), Totally Integrated Automation Portal (TIA Portal) V20 (All versions), User Management Component (UMC) (All versions < V2.15.1.1). Affected products contain a out of bound read buffer overflow vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to cause a denial of service condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0065 51st percentileScored 2026-11-07
Fix Fixed SINEC NMS (Siemens): V4.0User Management Component (UMC) (Siemens): V2.15.1.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
SiemensSIMATIC PCS neo V4.1all versions—No fix listedCNA
SiemensSIMATIC PCS neo V5.0all versions—No fix listedCNA
SiemensSINEC NMSbefore V4.0V4.0Patch availableCNA
SiemensSINEMA Remote Connectall versions—No fix listedCNA
SiemensTotally Integrated Automation Portal (TIA Portal) V17all versions—No fix listedCNA
SiemensTotally Integrated Automation Portal (TIA Portal) V18all versions—No fix listedCNA
SiemensTotally Integrated Automation Portal (TIA Portal) V19all versions—No fix listedCNA
SiemensTotally Integrated Automation Portal (TIA Portal) V20all versions—No fix listedCNA
SiemensUser Management Component (UMC)before V2.15.1.1V2.15.1.1Patch availableCNA
  • SIMATIC PCS neo V4.1 VendorSiemens Affected all versions Fixed in — No fix listed CNA
  • SIMATIC PCS neo V5.0 VendorSiemens Affected all versions Fixed in — No fix listed CNA
  • SINEC NMS VendorSiemens Affected before V4.0 Fixed in V4.0 Patch available CNA
  • SINEMA Remote Connect VendorSiemens Affected all versions Fixed in — No fix listed CNA
  • Totally Integrated Automation Portal (TIA Portal) V17 VendorSiemens Affected all versions Fixed in — No fix listed CNA
  • Totally Integrated Automation Portal (TIA Portal) V18 VendorSiemens Affected all versions Fixed in — No fix listed CNA
  • Totally Integrated Automation Portal (TIA Portal) V19 VendorSiemens Affected all versions Fixed in — No fix listed CNA
  • Totally Integrated Automation Portal (TIA Portal) V20 VendorSiemens Affected all versions Fixed in — No fix listed CNA
  • User Management Component (UMC) VendorSiemens Affected before V2.15.1.1 Fixed in V2.15.1.1 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:siemens:sinec_nms:*:*:*:*:*:*:*:*before 4.0VulnerableSiemens
cpe:2.3:a:siemens:sinema_remote_connect:-:*:*:*:*:*:*:*not specified by NVDVulnerableSiemens
cpe:2.3:a:siemens:totally_integrated_automation_portal:17:*:*:*:*:*:*:*17VulnerableSiemens
cpe:2.3:a:siemens:totally_integrated_automation_portal:18:*:*:*:*:*:*:*18VulnerableSiemens
cpe:2.3:a:siemens:totally_integrated_automation_portal:19:*:*:*:*:*:*:*19VulnerableSiemens
cpe:2.3:a:siemens:totally_integrated_automation_portal:20:*:*:*:*:*:*:*20VulnerableSiemens
cpe:2.3:a:siemens:user_management_component:*:*:*:*:*:*:*:*before 2.15.1.1VulnerableSiemens
  • cpe:2.3:a:siemens:sinec_nms:*:*:*:*:*:*:*:* Versions before 4.0 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:sinema_remote_connect:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
  • cpe:2.3:a:siemens:totally_integrated_automation_portal:17:*:*:*:*:*:*:* Versions 17 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:totally_integrated_automation_portal:18:*:*:*:*:*:*:* Versions 18 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:totally_integrated_automation_portal:19:*:*:*:*:*:*:* Versions 19 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:totally_integrated_automation_portal:20:*:*:*:*:*:*:* Versions 20 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:user_management_component:*:*:*:*:*:*:*:* Versions before 2.15.1.1 Vulnerable ·Siemens

Remediation

  • Fix · CNA SINEC NMS (Siemens) Fixed in V4.0
  • Fix · CNA User Management Component (UMC) (Siemens) Fixed in V2.15.1.1

Fixed in the same release

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

  • Release ·

    Siemens SINEC NMS, User Management Component (UMC) V2.15.1.1, V4.0

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2025-21515 Out-of-bounds read in Siemens SIMATIC PCS neo V4.1Priority MEDIUM 45
    • TI-2025-21514 Out-of-bounds write in Siemens SIMATIC PCS neo V4.1Priority MEDIUM 45
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-30174
  2. 2026-10-03 Alias added: GHSA-c22p-h6j4-33wp
  3. 2026-10-16 EPSS moved to the 50th–90th percentile

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