{"id":"CVE-2026-110598","revision":"daf6cd8eaa45450bbb0ab6e9b865f657","records":[{"revision":"daf6cd8eaa45450bbb0ab6e9b865f657","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-110598","aliases":[],"title":"Libyal libpff through 20260926 heap out-of-bounds read via libpff_record_entry_get_multi_value","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.","state":0,"publishedAt":"2026-10-14T14:16:40.986+00:00","modifiedAt":"2026-10-14T15:54:41.505+00:00","affected":[{"ecosystem":"Vendor product","name":"libpff","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"libyal\",\n                    \"product\": \"libpff\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"20260926\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/libyal/libpff\",\n                    \"repo\": \"https://github.com/libyal/libpff\"\n                }"}],"metrics":[{"system":"CVSS 4.0","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,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","score":6.1,"severity":"MEDIUM"}],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110598","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-110598","identifiers":["CVE-2026-110598"]},"retained":false,"historicalAffected":[]}],"coverage":[]}