IBM Power Sys Firmware FW1120.00-1110.30 FSP Access RCE -> Availability
CVE-2026-16938 Published on August 19, 2026
Power System Missing Authorization
IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in access controls over privileged system configuration operations on the FSP. An attacker with authenticated administrator-level access to the FSP can place the managed system into a non-production operational mode, allowing certain system components to be disabled. This condition persists across FSP resets and requires explicit operator intervention clearing the affected configuration to restore normal operation. Successful exploitation results in an availability impact to the managed system.
Vulnerability Analysis
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-16938 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-16938
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Affected Versions
IBM Power Systems Firmware:- Version FW1120.00 is affected.
- Version FW1110.00, <= FW1110.30 is affected.
- Version FW1060.00, <= FW1060.80 is affected.
- Version FW950.00, <= FW950.H2 is affected.