{"id":"CVE-2026-110598","aliases":["DEBIAN-CVE-2026-110598","EUVD-2026-101226","GHSA-9f2v-576g-7mp5","UBUNTU-CVE-2026-110598","openSUSE-SU-2026:12498-1"],"status":"published","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.","severity":{"version":"4.0","score":6.9,"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00168,"percentile":0.06259,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-10-14T14:16:40Z","modified":"2026-11-10T13:15:12Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180714-3","20180714-3.1","20180714-3.1~exp1","20231205-1"]},{"source":"osv","ecosystem":"Debian:13","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180714-3.1","20231205-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180714-3.1","20231205-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20120802-5"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20120802-5","20120802-5.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180714-1","20180714-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180714-3","20180714-3build1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180714-3build2","20180714-3build3","20180714-3.1","20180714-3.1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20231205-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180714-3.1build2","20231205-1","20231205-1build1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"libpff","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20261030-1.1"}]}],"bundled":3}],"products":[{"vendor":"libyal","product":"libpff"}],"references":[{"url":"https://hackmd.io/@haind-pwn/libpff-multivalue-offset-underflow-oob-read","tags":["third-party-advisory","advisory","report"]},{"url":"https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_record_entry.c#L2825-L2874","tags":["technical-description","article","report"]},{"url":"https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_multi_value.c#L207-L271","tags":["technical-description","article","report"]},{"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","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110598","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9f2v-576g-7mp5"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110598.json","tags":["advisory"]},{"url":"https://github.com/libyal/libpff","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-110598","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-110598","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110598","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-110598","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-116735","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-116736","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-110598","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.","status":"published","published":"2026-10-14T14:16:40.986Z","modified":"2026-10-27T01:30:44.414Z","cvss":[{"version":"4.0","score":6.9,"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","level":"medium","assessor":"cna"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T13:34:26.24368Z"}],"euvd":[{"id":"EUVD-2026-101226","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.","status":"published","published":"2026-10-14T14:16:40Z","modified":"2026-10-27T01:30:44Z","cvss":[{"version":"4.0","score":6.9,"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","level":"medium"}],"updated_at":"2026-11-02T16:59:25.230426Z"}],"ghsa":[{"id":"GHSA-9f2v-576g-7mp5","title":"Libyal libpff through 20260926 contains an integer underflow in...","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.","status":"published","published":"2026-10-14T15:32:23Z","modified":"2026-10-14T15:32:30Z","cvss":[{"version":"4.0","score":6.9,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:13:26.117603Z"}],"nvd":[{"id":"CVE-2026-110598","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.","status":"published","published":"2026-10-14T15:17:11.103Z","modified":"2026-10-16T19:18:44.867Z","cvss":[{"version":"4.0","score":6.9,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:58.99337Z"}],"osv":[{"id":"CVE-2026-110598","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.","status":"published","published":"2026-10-14T14:16:40.986Z","modified":"2026-11-10T13:27:17.583431151Z","cvss":[{"version":"4.0","score":6.9,"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","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-10T14:01:23.83579Z"},{"id":"DEBIAN-CVE-2026-110598","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.","status":"published","published":"2026-10-14T15:17:11.103Z","modified":"2026-10-23T17:47:22.912746565Z","cvss":[{"version":"4.0","score":6.9,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:45:49.824149Z"},{"id":"UBUNTU-CVE-2026-110598","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.","status":"published","published":"2026-10-14T15:17:00Z","modified":"2026-10-28T17:50:34Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"},{"version":"4.0","score":6.9,"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","level":"medium"}],"updated_at":"2026-11-02T16:55:59.591851Z"},{"id":"openSUSE-SU-2026:12498-1","title":"libpff-devel-20261030-1.1 on GA media","description":"These are all security issues fixed in the libpff-devel-20261030-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-11-09T00:00:00Z","modified":"2026-11-10T13:15:12.111356419Z","updated_at":"2026-11-10T13:29:51.103746Z"}]}}