CVE-2026-25654: Siemens Sinec Nms

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3). Affected products do not properly validate user authorization when processing password reset requests. This could allow an authenticated remote attacker to bypass authorization checks, leading to the ability to reset the password of any arbitrary user account.

Affected products

• Siemens Sinec Nms: before V4.0 SP3 (fixed in V4.0 SP3)

Published 2026-04-14. Last modified 2026-06-17.