CVE-2026-4936

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
Link Resource
https://www.ibm.com/support/pages/node/7283890 Vendor Advisory
Configurations

Configuration 1 (hide)

AND
OR cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s1122_\(9824-22a\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1122_\(9824-22a\):-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
OR cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s1124_\(9824-42a\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1124_\(9824-42a\):-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
OR cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s1122s_\(9824-22b\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1122s_\(9824-22b\):-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
OR cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s1114_\(9824-41b\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1114_\(9824-41b\):-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
OR cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_l1122_\(9856-22h\):-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
OR cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_l1124_\(9856-42h\):-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
OR cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e1150_\(9043-mru\):-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:ibm:power_system_s1112_\(9242-21b\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1112_\(9242-21b\):-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND
cpe:2.3:o:ibm:power_system_s1112_\(9242-21t\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1112_\(9242-21t\):-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND
cpe:2.3:o:ibm:power_system_e1080_\(9080-hex\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e1080_\(9080-hex\):-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND
cpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1022_\(9105-22a\):-:*:*:*:*:*:*:*

Configuration 12 (hide)

AND
cpe:2.3:o:ibm:power_system_s1024_\(9105-42a\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1024_\(9105-42a\):-:*:*:*:*:*:*:*

Configuration 13 (hide)

AND
cpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1022s_\(9105-22b\):-:*:*:*:*:*:*:*

Configuration 14 (hide)

AND
cpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1014_\(9105-41b\):-:*:*:*:*:*:*:*

Configuration 15 (hide)

AND
cpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_l1022_\(9786-22h\):-:*:*:*:*:*:*:*

Configuration 16 (hide)

AND
cpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_l1024_\(9786-42h\):-:*:*:*:*:*:*:*

Configuration 17 (hide)

AND
cpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e1050_\(9043-mrx\):-:*:*:*:*:*:*:*

Configuration 18 (hide)

AND
cpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s1012_\(9028-21b\):-:*:*:*:*:*:*:*

Configuration 19 (hide)

AND
OR cpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e1180_\(9080-heu\):-:*:*:*:*:*:*:*

Configuration 20 (hide)

AND
cpe:2.3:o:ibm:power_system_s922_\(9009-22g\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s922_\(9009-22g\):-:*:*:*:*:*:*:*

Configuration 21 (hide)

AND
cpe:2.3:o:ibm:power_system_h922_\(9223-22s\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_h922_\(9223-22s\):-:*:*:*:*:*:*:*

Configuration 22 (hide)

AND
cpe:2.3:o:ibm:power_system_s914_\(9009-41g\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s914_\(9009-41g\):-:*:*:*:*:*:*:*

Configuration 23 (hide)

AND
cpe:2.3:o:ibm:power_system_s924_\(9009-42g\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_s924_\(9009-42g\):-:*:*:*:*:*:*:*

Configuration 24 (hide)

AND
cpe:2.3:o:ibm:power_system_h924_\(9223-42s\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_h924_\(9223-42s\):-:*:*:*:*:*:*:*

Configuration 25 (hide)

AND
cpe:2.3:o:ibm:power_system_e950_\(9040-mr9\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e950_\(9040-mr9\):-:*:*:*:*:*:*:*

Configuration 26 (hide)

AND
cpe:2.3:o:ibm:power_system_e980_\(9080-m9s\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:ibm:power_system_e980_\(9080-m9s\):-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-19 21:16

Updated : 2026-08-25 20:36


NVD link : CVE-2026-4936

Mitre link : CVE-2026-4936

CVE.ORG link : CVE-2026-4936


JSON object : View

Products Affected

ibm

  • power_system_s1024_\(9105-42a\)
  • power_system_s1024_\(9105-42a\)_firmware
  • power_system_s1112_\(9242-21b\)
  • power_system_s1114_\(9824-41b\)_firmware
  • power_system_s1014_\(9105-41b\)
  • power_system_e1150_\(9043-mru\)_firmware
  • power_system_e950_\(9040-mr9\)
  • power_system_s1112_\(9242-21t\)
  • power_system_l1124_\(9856-42h\)
  • power_system_s1014_\(9105-41b\)_firmware
  • power_system_s1122_\(9824-22a\)_firmware
  • power_system_l1024_\(9786-42h\)
  • power_system_l1122_\(9856-22h\)_firmware
  • power_system_l1122_\(9856-22h\)
  • power_system_e980_\(9080-m9s\)
  • power_system_s922_\(9009-22g\)_firmware
  • power_system_s1012_\(9028-21b\)
  • power_system_s1112_\(9242-21b\)_firmware
  • power_system_s1022_\(9105-22a\)_firmware
  • power_system_e1180_\(9080-heu\)
  • power_system_e1050_\(9043-mrx\)
  • power_system_s1122_\(9824-22a\)
  • power_system_s924_\(9009-42g\)
  • power_system_l1124_\(9856-42h\)_firmware
  • power_system_s924_\(9009-42g\)_firmware
  • power_system_s914_\(9009-41g\)
  • power_system_s914_\(9009-41g\)_firmware
  • power_system_h924_\(9223-42s\)_firmware
  • power_system_s922_\(9009-22g\)
  • power_system_s1124_\(9824-42a\)_firmware
  • power_system_s1022_\(9105-22a\)
  • power_system_l1022_\(9786-22h\)
  • power_system_s1112_\(9242-21t\)_firmware
  • power_system_e1180_\(9080-heu\)_firmware
  • power_system_s1022s_\(9105-22b\)_firmware
  • power_system_l1024_\(9786-42h\)_firmware
  • power_system_s1122s_\(9824-22b\)
  • power_system_e950_\(9040-mr9\)_firmware
  • power_system_e980_\(9080-m9s\)_firmware
  • power_system_e1080_\(9080-hex\)
  • power_system_h922_\(9223-22s\)_firmware
  • power_system_e1050_\(9043-mrx\)_firmware
  • power_system_s1122s_\(9824-22b\)_firmware
  • power_system_s1022s_\(9105-22b\)
  • power_system_s1012_\(9028-21b\)_firmware
  • power_system_s1114_\(9824-41b\)
  • power_system_s1124_\(9824-42a\)
  • power_system_h924_\(9223-42s\)
  • power_system_l1022_\(9786-22h\)_firmware
  • power_system_e1150_\(9043-mru\)
  • power_system_e1080_\(9080-hex\)_firmware
  • power_system_h922_\(9223-22s\)
CWE
CWE-331

Insufficient Entropy