CVE-2026-15961: IBM Power System e1050 (9043-Mrx) Firmware

Medium severity, CVSS 6.0. EPSS: 0.1% chance of exploitation in the next 30 days.

IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 IBM PowerVM could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings.

Affected products

  • IBM Power System e1050 (9043-Mrx) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System e1080 (9080-Hex) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System e1150 (9043-Mru) Firmware: from fw1110.00, before fw1110.31 (fixed in fw1110.31); version fw1120.00 only
  • IBM Power System e1180 (9080-Heu) Firmware: from fw1110.00, before fw1110.31 (fixed in fw1110.31); version fw1120.00 only
  • IBM Power System l1022 (9786-22h) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System l1024 (9786-42h) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System l1122 (9856-22h) Firmware: from fw1110.00, before fw1110.31 (fixed in fw1110.31); version fw1120.00 only
  • IBM Power System l1124 (9856-42h) Firmware: from fw1110.00, before fw1110.31 (fixed in fw1110.31); version fw1120.00 only
  • IBM Power System s1012 (9028-21b) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System s1014 (9105-41b) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System s1022 (9105-22a) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System s1022s (9105-22b) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System s1024 (9105-42a) Firmware: from fw1060.00, before fw1060.81 (fixed in fw1060.81)
  • IBM Power System s1112 (9242-21b) Firmware: version fw1120.00 only
  • IBM Power System s1112 (9242-21t) Firmware: version fw1120.00 only
  • IBM Power System s1114 (9824-41b) Firmware: from fw1110.00, before fw1110.31 (fixed in fw1110.31); version fw1120.00 only
  • IBM Power System s1122 (9824-22a) Firmware: from fw1110.00, before fw1110.31 (fixed in fw1110.31); version fw1120.00 only
  • IBM Power System s1122s (9824-22b) Firmware: from fw1110.00, before fw1110.31 (fixed in fw1110.31); version fw1120.00 only
  • IBM Power System s1124 (9824-42a) Firmware: from fw1110.00, before fw1110.31 (fixed in fw1110.31); version fw1120.00 only

Published 2026-08-19. Last modified 2026-08-25.