{"schema":"threatline.record/2","record":{"id":"CVE-2026-79608","aliases":[],"summary":"x86/AMD: ineffectual Zenbleed workaround","details":"The workaround for XSA-433 (Zenbleed, CVE-2023-20593) was later\nre-worked to better integrate with other manipulations of the same MSR.\nIn this rework an inverted conditional was introduced, resulting in the\nworkaround to not be applied when needed and vice versa.\n\nFor more details, see:\n  http://xenbits.xen.org/xsa/advisory-433.html","categories":["Unclassified"],"product":"Xen","vendor":"Xen","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-79608","source_modified_at":"2026-10-20T17:36:56.453Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Xen","vendor":"Xen","versions":[{"status":"unknown","version":"consult Xen advisory XSA-515"}],"defaultStatus":"unknown"}],"fixed_versions":[],"cvss":9.8,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00349,"percentile":0.27362,"score_date":"2026-10-23"},"published_at":"2026-10-13T15:44:08.729Z","modified_at":"2026-10-20T17:36:56.453Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-79608","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T17:36:56.453Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-79608","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://xenbits.xenproject.org/xsa/advisory-515.html"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-20T17:36:52.086871Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-20T17:36:56.453Z","content_hash":"75342134a44c2babf01e083c837b13faff6492adad17f74bdd6bfd010739620d"}}