Vulnerability · Published Oct 26, 2026 · Assigned by VulnCheck
CVE-2026-116735libpff through 20260926 Heap Out-of-Bounds Read via libpff_table_read_6c_record_entries
Medium 6.1
In plain English
A medium-severity security flaw in libpff from libyal. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.1%top 97.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | libpff | no fix listed | UBUNTU-CVE-2026-116735 |
| Ubuntu:24.04:LTS | libpff | no fix listed | UBUNTU-CVE-2026-116735 |
| Ubuntu:26.04:LTS | libpff | no fix listed | UBUNTU-CVE-2026-116735 |
| Ubuntu:26.10 | libpff | no fix listed | UBUNTU-CVE-2026-116735 |
Affected products (as reported)
Weakness: CWE-193 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References
- GitHub Issue #172 issue-tracking
- https://github.com/libyal/libpff product
- https://github.com/libyal/libpff/commit/cb83eb38ffdbdfe2c69238fe7ce481ddc8513266 patch
- https://github.com/libyal/libpff/blob/20260926/libpff/libpff_table.c#L5431-L5445 technical-description
- https://hackmd.io/@haindpwn/libpff-table-parsing-oob-reads third-party-advisory
- VulnCheck Advisory: libpff through 20260926 Heap Out-of-Bounds Read via libpff_table_read_6c_record_entries third-party-advisory