{"id":"CVE-2026-110598","aliases":[],"title":"Libyal libpff through 20260926 heap out-of-bounds read via libpff_record_entry_get_multi_value","titleSource":"VulnCheck","descriptionSource":"VulnCheck","products":[{"vendor":"libyal","name":"libpff","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"20260926","versionType":"custom"}],"defaultStatus":"unaffected","source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-110598"}],"remediation":[],"description":"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memory.","severity":"medium","score":6.9,"published":"2026-10-14T14:16:40.986Z","modified":"2026-10-27T01:30:44.414Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://hackmd.io/@haind-pwn/libpff-multivalue-offset-underflow-oob-read","https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_record_entry.c#L2825-L2874","https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_multi_value.c#L207-L271","https://www.vulncheck.com/advisories/libyal-libpff-through-20260926-heap-out-of-bounds-read-via-libpff-record-entry-get-multi-value"],"sources":[{"name":"CVE","id":"CVE-2026-110598","modified":"2026-10-27T01:30:44.414Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-110598"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","score":6.9},{"source":"VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","score":6.1}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:05:31.497Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}