TecSecurity Vulnerability Research

Published advisory · ZDI-26-297

Siemens SINEC NMS Improper Authentication Privilege Escalation Vulnerability

Published Rocco Calvi
CVSS severity 8.8/ 10.0 · High AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vulnerability analysis

This vulnerability allows remote attackers to escalate privileges on affected installations of Siemens SINEC NMS. Authentication is required to exploit this vulnerability.

The specific flaw exists within the web service listening on TCP port 443. The issue results from improper authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to escalate privileges to access protected resources.

Disclosure timeline

  1. Vulnerability reported to vendor
  2. Coordinated public release of advisory
  3. Advisory updated

References