CVE-2026-116735 json
libpff through 20260926 Heap Out-of-Bounds Read via libpff_table_read_6c_record_entries
published 2026-10-26 13 d ago modified 2026-11-05 3 d ago also EUVD-2026-110483
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 2%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 d ago
Exploit prediction
0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackmd.io https://hackmd.io/@haindpwn/libpff-table-parsing-oob-reads referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | 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 |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H |
| CNA | 4.0 | 6.9 | 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 |
Affected products
- libyal libpff
Classification
- Weakness
-
- CWE-193 Off-by-one Error
References
-
github.com
/libyal/libpff/commit/cb83eb38ffdbdfe2c69238fe7ce481ddc8513266
patch
-
hackmd.io
/@haindpwn/libpff-table-parsing-oob-reads
third-party-advisory, exploit
-
github.com
/libyal/libpff/issues/172
issue-tracking
-
github.com
/libyal/libpff
product
-
github.com
/libyal/libpff/blob/20260926/libpff/libpff_table.c#L5431-L5445
technical-description
-
vulncheck.com
/advisories/libpff-through-20260926-heap-out-of-bounds-read-via-libpff-table-read-6c-record-entries
third-party-advisory
Sources
- CVE List CVE-2026-116735
- NVD CVE-2026-116735
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.