High severity8.1NVD Advisory· Published Oct 20, 2026
WAGO: Missing Authorization for PROFIBUS Configuration in WBM
CVE-2026-88850
Description
The Web-Based Management (WBM) authorization model does not properly enforce permissions for all PROFIBUS configuration operations. A low-privileged remote attacker can abuse an exposed configuration function to modify root-owned PROFIBUS parameters, including device addressing and SSA settings. This allows unauthorized changes to fieldbus-related configuration and violates the intended privilege boundaries within the management interface.
Affected products
1Patches
Vulnerability mechanics
News mentions
1- WAGO OS LinuxCISA ICS Advisories