CVE-2026-85115: .NET Client Library for SIMATIC S7 Webserver API 0 to before V3.3.62

Affected technology

.NET Client Library for SIMATIC S7 Webserver API · 0 to before V3.3.62
Siemens

Description’s affected range: versions < V3.3.62)

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Local · Low privileges required · No user interaction required

What an attacker can do

An attacker with access to logs or other diagnostic output could obtain the plaintext restore password and potentially perform unauthorized operations on the PLC. Vendor/CNA’s CVSS 4.0 assessment (base score 6.8/10) rates confidentiality impact as high; integrity and availability impact as none.