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.
Metrics
CVSS 3.1 6.1/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HWeakness enumeration
Affected software
No affected versions have been published.
Timeline
- Published
- Oct 14, 2026
- Last modified
- Oct 16, 2026
- NVD status
- Deferred