{"schema":"threatline.record/2","record":{"id":"CVE-2026-110598","aliases":[],"summary":"Libyal libpff through 20260926 heap out-of-bounds read via libpff_record_entry_get_multi_value","details":"Libyal libpff through 20260926 contains an integer underflow in libpff_record_entry_get_multi_value() that allows attackers to trigger heap out-of-bounds reads via non-monotonic multi-value offsets. Attackers can craft PST, OST or PAB files with decreasing PT_MV_STRING8, PT_MV_UNICODE or PT_MV_BINARY offsets to crash libpff, pypff or pffexport and expose adjacent heap memory.","categories":["Unclassified"],"product":"libpff","vendor":"libyal","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110598","source_modified_at":"2026-10-14T15:54:41.505Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"libpff","vendor":"libyal","versions":[{"version":"0","lessThanOrEqual":"20260926","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00171,"percentile":0.06135,"score_date":"2026-10-23"},"published_at":"2026-10-14T14:16:40.986Z","modified_at":"2026-10-14T15:54:41.505Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110598","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T15:54:41.505Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110598","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@haind-pwn/libpff-multivalue-offset-underflow-oob-read","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_record_entry.c#L2825-L2874","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_multi_value.c#L207-L271","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/libyal-libpff-through-20260926-heap-out-of-bounds-read-via-libpff-record-entry-get-multi-value","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-14T14:49:33.739466Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T15:54:41.505Z","content_hash":"5afa3c400c512f652c77dd41da0d895067e1f0f4cd03efbc2aadd38f7971afc7"}}