CVE-2021-37201: Siemens Sinec Network Management System

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP1). The web interface of affected devices is vulnerable to a Cross-Site Request Forgery (CSRF) attack. This could allow an attacker to manipulate the SINEC NMS configuration by tricking an unsuspecting user with administrative privileges to click on a malicious link.

Affected products

• Siemens Sinec Network Management System: before 1.0 (fixed in 1.0); version 1.0 only

Published 2021-09-14. Last modified 2026-06-17.