CVEvulnerability

CVE-2026-4936

6.2 MEDIUM Published 2026-08-19 Modified 2026-08-25 Official page ↗
Status
Analyzed
Published
2026-08-19
Last modified
2026-08-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.1 MEDIUM — CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N
CVSS 3.1 ([email protected])
6.2 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-331

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.

Affected configurations

• ibm power system s1122 \(9824-22a\) firmware (>= fw1110.00 < fw1110.30) • ibm power system s1122 \(9824-22a\) firmware fw1120.00 • ibm power system s1124 \(9824-42a\) firmware (>= fw1110.00 < fw1110.30) • ibm power system s1124 \(9824-42a\) firmware fw1120.00 • ibm power system s1122s \(9824-22b\) firmware (>= fw1110.00 < fw1110.30) • ibm power system s1122s \(9824-22b\) firmware fw1120.00 • ibm power system s1114 \(9824-41b\) firmware (>= fw1110.00 < fw1110.30) • ibm power system s1114 \(9824-41b\) firmware fw1120.00 • ibm power system l1122 \(9856-22h\) firmware (>= fw1110.00 < fw1110.30) • ibm power system l1122 \(9856-22h\) firmware fw1120.00 • ibm power system l1124 \(9856-42h\) firmware (>= fw1110.00 < fw1110.30) • ibm power system l1124 \(9856-42h\) firmware fw1120.00 • ibm power system e1150 \(9043-mru\) firmware (>= fw1110.00 < fw1110.30) • ibm power system e1150 \(9043-mru\) firmware fw1120.00 • ibm power system s1112 \(9242-21b\) firmware fw1120.00 • ibm power system s1112 \(9242-21t\) firmware fw1120.00 • ibm power system e1080 \(9080-hex\) firmware (>= fw1060.00 < fw1060.72) • ibm power system s1022 \(9105-22a\) firmware (>= fw1060.00 < fw1060.72) • ibm power system s1024 \(9105-42a\) firmware (>= fw1060.00 < fw1060.72) • ibm power system s1022s \(9105-22b\) firmware (>= fw1060.00 < fw1060.72) • ibm power system s1014 \(9105-41b\) firmware (>= fw1060.00 < fw1060.72) • ibm power system l1022 \(9786-22h\) firmware (>= fw1060.00 < fw1060.72) • ibm power system l1024 \(9786-42h\) firmware (>= fw1060.00 < fw1060.72) • ibm power system e1050 \(9043-mrx\) firmware (>= fw1060.00 < fw1060.72) • ibm power system s1012 \(9028-21b\) firmware (>= fw1060.00 < fw1060.72) • ibm power system e1180 \(9080-heu\) firmware (>= fw1110.00 < fw1110.30) • ibm power system e1180 \(9080-heu\) firmware fw1120.00 • ibm power system s922 \(9009-22g\) firmware (>= fw950.00 < fw950.h3) • ibm power system h922 \(9223-22s\) firmware (>= fw950.00 < fw950.h3) • ibm power system s914 \(9009-41g\) firmware (>= fw950.00 < fw950.h3) • ibm power system s924 \(9009-42g\) firmware (>= fw950.00 < fw950.h3) • ibm power system h924 \(9223-42s\) firmware (>= fw950.00 < fw950.h3) • ibm power system e950 \(9040-mr9\) firmware (>= fw950.00 < fw950.h3) • ibm power system e980 \(9080-m9s\) firmware (>= fw950.00 < fw950.h3)

Related

Weakness · CWE (1)

  • CWE-331 Insufficient Entropy weakness

References