{"schema":"threatline.record/2","record":{"id":"CVE-2026-97631","aliases":["GHSA-99cj-7hg9-mp4m"],"summary":"Pre-boot RCE in EDK II PXE driver","details":"EDK2 contains a vulnerability in BIOS where a user may cause “Out-of-bounds\nWrite”, Classic\nBuffer Overflow, and “Incorrect Calculation of Buffer Size” by remote access. Successful exploitation of this vulnerability\ncan lead to arbitrary\ncode execution. It could also impact\nConfidentiality,\nIntegrity,\nand Availability.","categories":["Unclassified"],"product":"EDK2","vendor":"TianoCore","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97631","source_modified_at":"2026-10-22T16:37:13.437Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"EDK2","vendor":"TianoCore","versions":[{"status":"affected","version":"0","lessThanOrEqual":"edk2-stable202608","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.5,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00432,"percentile":0.36541,"score_date":"2026-10-23"},"published_at":"2026-10-22T16:32:27.619Z","modified_at":"2026-10-22T16:37:13.437Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97631","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-22T16:37:13.437Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97631","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/tianocore/edk2/security/advisories/GHSA-99cj-7hg9-mp4m"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-22T16:37:13.437Z","content_hash":"11b3bbf2cb1d0cdf4ec809767623c9adbe56db0bdd226f8d0edd8ea696dfaebf"}}