Out-of-bounds Read in Libyal Libpff
CVE-2026-116736
Libpff through 20260926 contains a heap out-of-bounds read vulnerability in libpff_table_read_values_array because a 7c column definition's values_array_size is not checked against remaining buffer bytes. Attackers can supply a crafted PST, OST or PAB file to make applications read adjacent heap memory into record entry values or crash.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/libyal/libpff/issues/172 (issue-tracking)
- github.com/libyal/libpff (product)
- github.com/libyal/libpff/commit/cb83eb38ffdbdfe2c69238fe7ce481ddc8513266 (patch)
- github.com/libyal/libpff/blob/20260926/libpff/libpff_table.c (technical-description)
- hackmd.io/@haindpwn/libpff-table-parsing-oob-reads (third-party-advisory)
- www.vulncheck.com/advisories/libpff-through-20260926-heap-out-of-bounds-read-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116736?
- CVE-2026-116736 is a medium-severity vulnerability in Libyal Libpff, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-10-26.
- How severe is CVE-2026-116736?
- Medium severity. CVSS v3 base score is 6.1 out of 10.