VIR Vulnerability Intelligence Relay

CVE-2026-4936

medium
Assigned by CNA: ibm
Published 2026-08-19 · Modified 2026-08-19
Discuss on Community Propose mitigation
CVSS v3
5.1
CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N
CVSS v4 NEW
—
not yet in upstream
VIR risk
5.1

Description

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.

Predictions

Exploit likelihood
51%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

References

CWEs

CWE-331

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.