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CVE-2026-4936
5.1 MEDIUM
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Adjacent (A)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): High (H)
- User Interaction (UI): Required (R)
- Scope (S): Changed (C)
- Confidentiality (C): High (H)
- Integrity (I): None (N)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Adjacent (A)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): High (H)
- Modified User Interaction (MUI): Required (R)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Changed (C)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): None (N)
Activity log
- Created & dismissed (no matching packages found) suggestion
Power System Insufficient Entropy
IBM PowerVM Hypervisor Platform KeyStore (PKS) and virtual TPM FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to the service processor or HMC could exploit this weakness to derive the encryption key and access the data.
References
Affected products
PowerVM Hypervisor
- =<FW950.H2
- =<FW1110.20
- =<FW1060.71