IBM Power Systems Firmware FW1120.01 RCE via Image Validation Path
CVE-2026-96263 Published on October 12, 2026
IBM Power Systems Firmware Buffer Overflow
IBM Power Systems Firmware FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the host firmware boot process image validation path. An attacker with service access to the service processor can supply a maliciously crafted code update image, allowing arbitrary code to be executed on the host system. Successful exploitation could result in a confidentiality, integrity, and availability impact to the affected host system.
Vulnerability Analysis
CVE-2026-96263 can be exploited with local system access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Stack Overflow Vulnerability?
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CVE-2026-96263 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-96263
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Affected Versions
IBM PowerVM Hypervisor:- Version FW1120.00, <= FW1120.01 is affected.
- Version FW1110.00, <= FW1110.31 is affected.
- Version FW1060.00, <= FW1060.81 is affected.