Intelligence online17 sources monitored11 actively exploited 7d42 published 24hChecked recently
Vulnerability record

CVE-2026-85114

HighNo known exploitation

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations, limit exposure of affected systems, and watch this record for a patch.

Description

A vulnerability has been identified in .NET Client Library for SIMATIC S7 Webserver API (All versions < V3.3.61). Affected applications do not properly validate filenames received from remote servers during ticket downloads. This could allow an attacker who can manipulate the ticket response to write arbitrary files outside the intended download directory and, when overwriting is enabled, replace existing files accessible to the application.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdate

    CVE-2026-85114 scored CVSS 8.7

    Basis: NIST National Vulnerability Database

  2. Disclosed

    Siemens SIMATIC S7 Webserver API

    Basis: CISA Cybersecurity Advisories (government advisory)

Coverage

References