CVE-2025-30174: Siemens Sinec Nms

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Siemens Sinec Nms: before 4.0 (fixed in 4.0)
• Siemens Sinema Remote Connect: affected versions not specified
• Siemens Totally Integrated Automation Portal: version 17 only; version 18 only; version 19 only; version 20 only
• Siemens User Management Component: before 2.15.1.1 (fixed in 2.15.1.1)

Published 2025-05-13. Last modified 2026-06-17.