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Fencer Vulns
high 7.5

CVE-2025-30174 json

A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SINEC NMS (All versions <…

published 2025-05-13 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-14391

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

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.

Patch / fix

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

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-135-09 updated cvss 7.5

Siemens User Management Component (UMC)

  • Siemens SIMATIC PCS neo V4.1 Siemens SIMATIC PCS neo V5.0
    affected: mitigation, no fix planned
  • Siemens SINEC NMS < 4.0
    affected: fixed in V4.0, mitigation support.industry.siemens.com
  • Siemens SINEMA Remote Connect Siemens Totally Integrated Automation Portal (TIA Portal) V17 Siemens Totally Integrated Automation Portal (TIA Portal) V18 Siemens Totally Integrated Automation Portal (TIA Portal) V19 Siemens Totally Integrated Automation Portal (TIA Portal) V20
    affected: fixed in V2.15.1.1, mitigation
  • Siemens User Management Component (UMC) < 2.15.1.1
    affected: fixed in V2.15.1.1, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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:X/V:X/RE:X/U:X

Affected products

  • Siemens SIMATIC PCS neo V4.1
  • Siemens SIMATIC PCS neo V5.0
  • Siemens SINEC NMS
  • Siemens SINEMA Remote Connect
  • Siemens Totally Integrated Automation Portal (TIA Portal) V17
  • Siemens Totally Integrated Automation Portal (TIA Portal) V18
  • Siemens Totally Integrated Automation Portal (TIA Portal) V19
  • Siemens Totally Integrated Automation Portal (TIA Portal) V20
  • Siemens User Management Component (UMC)

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.