{"id":"CVE-2026-96265","state":"PUBLISHED","title":"IBM Power Systems Firmware Improper Memory Buffer Restriction","description":"IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to read or modify arbitrary regions of Hostboot memory, compromising the host firmware boot stack and the hypervisor subsequently loaded by it. Successful exploitation results in a confidentiality, integrity, and availability impact to the managed system.","publishedAt":"2026-10-12T20:52:00.904Z","updatedAt":"2026-10-13T11:57:49.766Z","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":"FW1060.00","status":"affected","lessThanOrEqual":"FW1060.81","versionType":"semver"}],"cpes":["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/7290124"],"weaknesses":["CWE-119"],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/96xxx/CVE-2026-96265.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-96265","state":"PUBLISHED","datePublished":"2026-10-12T20:52:00.904Z","dateUpdated":"2026-10-13T11:57:49.766Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-09-22T20:15:59.332Z"},"containers":{"cna":{"title":"IBM Power Systems Firmware Improper Memory Buffer Restriction","descriptions":[{"lang":"en","value":"IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to read or modify arbitrary regions of Hostboot memory, compromising the host firmware boot stack and the hypervisor subsequently loaded by it. Successful exploitation results in a confidentiality, integrity, and availability impact to the managed system."}],"affected":[{"vendor":"IBM","product":"PowerVM Hypervisor","versions":[{"version":"FW1060.00","status":"affected","lessThanOrEqual":"FW1060.81","versionType":"semver"}],"cpes":["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/7290124","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-119","lang":"en","description":"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-10-12T20:52:00.904Z"},"solutions":[{"lang":"en","value":"Customers 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\n\n\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":"<p>Customers with the products below should install  FW1060.82(1060_199), or newer to remediate this vulnerability.<br/>Power 10</p><ol><li>IBM Power System S1022 (9105-22A)</li><li>IBM Power System S1024 (9105-42A)</li><li>IBM Power System S1022s (9105-22B)</li><li>IBM Power System S1014 (9105-41B)</li><li>IBM Power System L1022 (9786-22H)</li><li>IBM Power System L1024 (9786-42H)</li><li>IBM Power System E1050 (9043-MRX)</li><li>IBM Power System S1012 (9028-21B)</li></ol><p></p><p><em>The images mentioned above can be located at IBM Fix Central : </em><a href=\"https://www.ibm.com/support/fixcentral/\" rel=\"noopener noreferrer nofollow\"><em>https://www.ibm.com/support/fixcentral/</em></a></p>"}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-96265","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-13T03:55:39.210521Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-13T11:57:49.766Z"}}]}}}