{"id":"CVE-2026-16687","state":"PUBLISHED","title":"Power System Buffer Overflow","description":"IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2  is affected by a vulnerability in the ASMI web interface. An unauthenticated attacker with network access can send the FSP a malformed request, allowing arbitrary code execution, giving the attacker full control over the managed system, resulting in a confidentiality, integrity, and availability impact.","publishedAt":"2026-08-19T18:56:41.912Z","updatedAt":"2026-08-22T03:56:02.086Z","severity":{"score":9.6,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","source":"ibm"},"assigner":"ibm","products":["IBM Power Systems Firmware"],"affected":[{"vendor":"IBM","product":"Power Systems Firmware","versions":[{"version":"FW1120.00","status":"affected"},{"version":"FW1110.00","status":"affected","lessThanOrEqual":"FW1110.30","versionType":"semver"},{"version":"FW1060.00","status":"affected","lessThanOrEqual":"FW1060.80","versionType":"semver"},{"version":"FW950.00","status":"affected","lessThanOrEqual":"FW950.H2","versionType":"semver"}],"cpes":["cpe:2.3:o:ibm:power_systems_firmware:fw1120.00:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw1110.00:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw1110.30:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw1060.00:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw1060.80:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw950.00:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw950.h2:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7283893"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16687.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16687","state":"PUBLISHED","datePublished":"2026-08-19T18:56:41.912Z","dateUpdated":"2026-08-22T03:56:02.086Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-07-23T00:09:08.103Z"},"containers":{"cna":{"title":"Power System Buffer Overflow","descriptions":[{"lang":"en","value":"IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2  is affected by a vulnerability in the ASMI web interface. An unauthenticated attacker with network access can send the FSP a malformed request, allowing arbitrary code execution, giving the attacker full control over the managed system, resulting in a confidentiality, integrity, and availability impact."}],"affected":[{"vendor":"IBM","product":"Power Systems Firmware","versions":[{"version":"FW1120.00","status":"affected"},{"version":"FW1110.00","status":"affected","lessThanOrEqual":"FW1110.30","versionType":"semver"},{"version":"FW1060.00","status":"affected","lessThanOrEqual":"FW1060.80","versionType":"semver"},{"version":"FW950.00","status":"affected","lessThanOrEqual":"FW950.H2","versionType":"semver"}],"cpes":["cpe:2.3:o:ibm:power_systems_firmware:fw1120.00:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw1110.00:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw1110.30:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw1060.00:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw1060.80:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw950.00:*:*:*:*:*:*:*","cpe:2.3:o:ibm:power_systems_firmware:fw950.h2:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7283893","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"CRITICAL","baseScore":9.6,"vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/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":"2026-08-19T18:56:55.611Z"},"workarounds":[{"lang":"en","value":"Protect access to the FSP's network interface.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Protect access to the FSP's network interface.</p>"}]}],"solutions":[{"lang":"en","value":"IBM strongly recommends customers with the products below install FW1120.01(1120_167), FW1110.31(1110_134) or newer to remediate this vulnerability as soon as possible.\nPower 11\n1) IBM Power System E1180 (9080-HEU)\nIBM strongly recommends customers with the products below install FW1060.81(1060_184) or newer to remediate this vulnerability as soon as possible.\nPower 10\n1) IBM Power System E1080 (9080-HEX)\nIBM strongly recommends customers with the products below install FW950.H3(950_230) or newer to remediate this vulnerability as soon as possible.\nPower 9\n1) IBM Power System S922 (9009-22G)\n2) IBM Power System H922 (9223-22S)\n3) IBM Power System S914 (9009-41G)\n4) IBM Power System S924 (9009-42G)\n5) IBM Power System H924 (9223-42S)\n6) IBM Power System E950 (9040-MR9)\n7) IBM Power System E980 (9080-M9S)\nThe images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>IBM strongly recommends customers with the products below install FW1120.01(1120_167), FW1110.31(1110_134) or newer to remediate this vulnerability as soon as possible.</p><p>Power 11<br/>1) IBM Power System E1180 (9080-HEU)</p><p>IBM strongly recommends customers with the products below install FW1060.81(1060_184) or newer to remediate this vulnerability as soon as possible.</p><p>Power 10<br/>1) IBM Power System E1080 (9080-HEX)</p><p>IBM strongly recommends customers with the products below install FW950.H3(950_230) or newer to remediate this vulnerability as soon as possible.</p><p>Power 9<br/>1) IBM Power System S922 (9009-22G)<br/>2) IBM Power System H922 (9223-22S)<br/>3) IBM Power System S914 (9009-41G)<br/>4) IBM Power System S924 (9009-42G)<br/>5) IBM Power System H924 (9223-42S)<br/>6) IBM Power System E950 (9040-MR9)<br/>7) IBM Power System E980 (9080-M9S)</p><p>The images mentioned above can be located at IBM Fix Central : <a href=\"https://www.ibm.com/support/fixcentral/\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/support/fixcentral/</a></p>"}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-21T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-16687"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-22T03:56:02.086Z"}}]}}}