Description
libpff through 20260926 contains an off-by-one bounds check in libpff_table_read_6c_record_entries that allows attackers to trigger a heap out-of-bounds read via crafted 6c table record entries. Attackers can supply crafted PST, OST or PAB files to applications like pffexport or pypff to read adjacent heap memory or cause crashes.
References7
- github.com/libyal/libpff
- github.com/libyal/libpff/blob/20260926/libpff/libpff_table.c#L5…
- github.com/libyal/libpff/commit/cb83eb38ffdbdfe2c69238fe7ce481d…
- github.com/libyal/libpff/issues/172
- hackmd.io/@haindpwn/libpff-table-parsing-oob-reads
- www.vulncheck.com/advisories/libpff-through-20260926-heap-out-o…
- hackmd.io/@haindpwn/libpff-table-parsing-oob-reads
Metrics
- CVSS 3.1
-
6.1
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - CVSS 4.0
-
6.9
MEDIUM
Score source: CNA
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 - EPSS — exploit probability
- 0% percentile: 2 · as of 8 November 2026
- CWE
- CWE-193
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.