{"id":"CVE-2026-96263","state":"PUBLISHED","title":"IBM Power Systems Firmware Buffer Overflow","description":"IBM Power Systems Firmware FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the host firmware boot process image validation path. An attacker with service access to the service processor can supply a maliciously crafted code update image, allowing arbitrary code to be executed on the host system. Successful exploitation could result in a confidentiality, integrity, and availability impact to the affected host system.","publishedAt":"2026-10-12T20:52:20.625Z","updatedAt":"2026-10-13T11:57:49.528Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","source":"ibm"},"assigner":"ibm","products":["IBM PowerVM Hypervisor"],"affected":[{"vendor":"IBM","product":"PowerVM Hypervisor","versions":[{"version":"FW1120.00","status":"affected","lessThanOrEqual":"FW1120.01","versionType":"semver"},{"version":"FW1110.00","status":"affected","lessThanOrEqual":"FW1110.31","versionType":"semver"},{"version":"FW1060.00","status":"affected","lessThanOrEqual":"FW1060.81","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81.0:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7290129"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/96xxx/CVE-2026-96263.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-96263","state":"PUBLISHED","datePublished":"2026-10-12T20:52:20.625Z","dateUpdated":"2026-10-13T11:57:49.528Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-09-22T20:14:24.422Z"},"containers":{"cna":{"title":"IBM Power Systems Firmware Buffer Overflow","descriptions":[{"lang":"en","value":"IBM Power Systems Firmware FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the host firmware boot process image validation path. An attacker with service access to the service processor can supply a maliciously crafted code update image, allowing arbitrary code to be executed on the host system. Successful exploitation could result in a confidentiality, integrity, and availability impact to the affected host system."}],"affected":[{"vendor":"IBM","product":"PowerVM Hypervisor","versions":[{"version":"FW1120.00","status":"affected","lessThanOrEqual":"FW1120.01","versionType":"semver"},{"version":"FW1110.00","status":"affected","lessThanOrEqual":"FW1110.31","versionType":"semver"},{"version":"FW1060.00","status":"affected","lessThanOrEqual":"FW1060.81","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81:*:*:*:*:*:*:*","cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81.0:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7290129","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":8.2,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","lang":"en","description":"CWE-121 Stack-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-10-12T20:52:20.625Z"},"workarounds":[{"lang":"en","value":"NOTE: If performing a concurrent upgrade you must reboot the system after updating to the new firmware level to mitigate this CVE","supportingMedia":[{"type":"text/html","base64":false,"value":"

NOTE: If performing a concurrent upgrade you must reboot the system after updating to the new firmware level to mitigate this CVE

"}]}],"solutions":[{"lang":"en","value":"Customers with the products below should install FW1110.32(1110_138), FW1120.02(1120_171), or newer to remediate this vulnerability.\nPower 11\n\n * IBM Power System E1180 (9080-HEU)\n\n\nCustomers with the products below should install FW1110.32(1110_160), FW1120.02(1120_195), or newer to remediate this vulnerability.\nPower 11\n\n * IBM Power System S1122 (9824-22A)\n * IBM Power System S1124 (9824-42A)\n * IBM Power System S1122s (9824-22B)\n * IBM Power System S1114 (9824-41B)\n * IBM Power System L1122 (9856-22H)\n * IBM Power System L1124 (9856-42H)\n * IBM Power System E1150 (9043-MRU)\n\n\nCustomers with the products below should install FW1120.02(1120_195), or newer to remediate this vulnerability.\n\n\n\nPower 11\n\n * IBM Power System S1112 (9242-21B, 9242-21T)\n\n\n\nCustomers with the products below should install FW1060.82(1060_189), or newer to remediate this vulnerability.\nPower 10\n\n * IBM Power System E1080 (9080-HEX)\n\n\nCustomers with the products below should install  FW1060.82(1060_199), or newer to remediate this vulnerability.\nPower 10\n\n * IBM Power System S1022 (9105-22A)\n * IBM Power System S1024 (9105-42A)\n * IBM Power System S1022s (9105-22B)\n * IBM Power System S1014 (9105-41B)\n * IBM Power System L1022 (9786-22H)\n * IBM Power System L1024 (9786-42H)\n * IBM Power System E1050 (9043-MRX)\n * IBM Power System S1012 (9028-21B)\n\n\nThe images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/ https://www.ibm.com/support/fixcentral/","supportingMedia":[{"type":"text/html","base64":false,"value":"

Customers with the products below should install FW1110.32(1110_138), FW1120.02(1120_171), or newer to remediate this vulnerability.
Power 11

  1. IBM Power System E1180 (9080-HEU)

Customers with the products below should install FW1110.32(1110_160), FW1120.02(1120_195), or newer to remediate this vulnerability.
Power 11

  1. IBM Power System S1122 (9824-22A)
  2. IBM Power System S1124 (9824-42A)
  3. IBM Power System S1122s (9824-22B)
  4. IBM Power System S1114 (9824-41B)
  5. IBM Power System L1122 (9856-22H)
  6. IBM Power System L1124 (9856-42H)
  7. IBM Power System E1150 (9043-MRU)

Customers with the products below should install FW1120.02(1120_195), or newer to remediate this vulnerability.

Power 11

  1. IBM Power System S1112 (9242-21B, 9242-21T)


Customers with the products below should install FW1060.82(1060_189), or newer to remediate this vulnerability.
Power 10

  1. IBM Power System E1080 (9080-HEX)

Customers with the products below should install  FW1060.82(1060_199), or newer to remediate this vulnerability.
Power 10

  1. IBM Power System S1022 (9105-22A)
  2. IBM Power System S1024 (9105-42A)
  3. IBM Power System S1022s (9105-22B)
  4. IBM Power System S1014 (9105-41B)
  5. IBM Power System L1022 (9786-22H)
  6. IBM Power System L1024 (9786-42H)
  7. IBM Power System E1050 (9043-MRX)
  8. IBM Power System S1012 (9028-21B)

The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/

"}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-96263","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-13T03:55:37.402548Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-13T11:57:49.528Z"}}]}}}