Encryption Flaw in IBM PowerVM Hypervisor Exposes Sensitive Data
CVE-2026-4932

4.2MEDIUM

Key Information:

Vendor

IBM
Status
Powervm Hypervisor
Vendor
CVE Published:
28 July 2026

What is CVE-2026-4932?

The PowerVM Hypervisor by IBM may allow an attacker with physical access to exploit a weakness in the Transparent Memory Encryption (TME) mechanism. This is due to insufficient cryptographic entropy, potentially enabling the attacker to decrypt sensitive encrypted memory data, posing serious security risks to systems utilizing this hypervisor.

Affected Version(s)

PowerVM Hypervisor FW1110.00

PowerVM Hypervisor FW1060.00

References

https://www.ibm.com/support/pages/node/7280632
vendor-advisorypatch

CVSS V3.1

Score:
4.2
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Physical
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.