CVE-2026-18821

IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 Power Systems Firmware is affected by a vulnerability in partition firmware during network boot. An unauthenticated attacker on the same network as a partition undergoing network boot can send a malformed packet, allowing arbitrary code to be executed in the partition firmware and compromising everything subsequently loaded by that partition. Other partitions and the managed system are not affected. Only partitions actively performing a network boot are affected, resulting in a confidentiality, integrity, and availability impact.
References
Link Resource
https://www.ibm.com/support/pages/node/7283232 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 20:17

Updated : 2026-08-25 20:40


NVD link : CVE-2026-18821

Mitre link : CVE-2026-18821

CVE.ORG link : CVE-2026-18821


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-787

Out-of-bounds Write