IBM PowerVM Hypervisor TME Entropy Leak (FW1060-FW1110)
CVE-2026-4932 Published on July 28, 2026
This Power System update is being released to address Insufficient Entropy
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.
Vulnerability Analysis
CVE-2026-4932 is exploitable with physical access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
Insufficient Entropy
The software uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.
Products Associated with CVE-2026-4932
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Affected Versions
IBM PowerVM Hypervisor:- Version FW1110.00, <= FW1110.20 is affected.
- Version FW1060.00, <= FW1060.71 is affected.