CVE-2026-110598
Libyal libpff through 20260926 heap out-of-bounds read via libpff_record_entry_get_multi_value
libyal libpff
CVSS
6.9MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- libpffaffected: all versions through 20260926CVE List
References 4
- hackmd.io/@haind-pwn/libpff-multivalue-offset-underflow-oob-readAdvisoryvia CVE List
- vulncheck.com/advisories/libyal-libpff-through-20260926-heap-out-of-bounds-read-via-libpff-record-entry-get-multi-valueAdvisoryvia CVE List
- github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_record_entry.c#L2825-L2874Referencevia CVE List
- github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_multi_value.c#L207-L271Referencevia CVE List