What’s Vulnerable › Vulnerabilities
CVE-2026-85114
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-13 · updated 2026-10-16
- Weakness: CWE-22
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.
Affected products
- Siemens .NET Client Library for SIMATIC S7 Webserver API: before V3.3.61 — fixed in V3.3.61
How to fix
Upgrade to a fixed version: Siemens .NET Client Library for SIMATIC S7 Webserver API V3.3.61. Check the vendor advisory for mitigations.
References
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