CVE-2026-116736

libpff through 20260926 Heap Out-of-Bounds Read via libpff_table_read_values_array

6.9 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: High

Exploit likelihood

0.13%Unchanged since Oct 27, 2026

What each source reports

CVE List Score used 6.9

libpff through 20260926 Heap Out-of-Bounds Read via libpff_table_read_values_array

Record: CVE-2026-116736
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2026-110484 6.9

Record: EUVD-2026-110484
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-gcj6-823j-cwm9 6.9

Libpff through 20260926 contains a heap out-of-bounds read vulnerability in...

Record: GHSA-gcj6-823j-cwm9
CVSS 4.0: 6.9 MediumCVSS: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
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

NVD 6.9

Record: CVE-2026-116736
CVSS 4.0: 6.9 MediumCVSS: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
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

OSV 6.9

libpff through 20260926 Heap Out-of-Bounds Read via libpff_table_read_values_array

Record: CVE-2026-116736
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-125
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-116736 6.9

Record: UBUNTU-CVE-2026-116736
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Updated: 2026-11-02

Affected products

libyal libpff

Affected packages

Affected packages
Package	Affected	Fixed
`libpff` Ubuntu:16.04:LTS	All versions, plus listed versions 20120802-5	None known
`libpff` Ubuntu:18.04:LTS	All versions, plus listed versions 20120802-520120802-5.1	None known
`libpff` Ubuntu:20.04:LTS	All versions, plus listed versions 20180714-120180714-2	None known
`libpff` Ubuntu:22.04:LTS	All versions, plus listed versions 20180714-320180714-3build1	None known
`libpff` Ubuntu:24.04:LTS	All versions, plus listed versions 20180714-3build220180714-3build320180714-3.120180714-3.1build1	None known
`libpff` Ubuntu:26.10	All versions, plus listed versions 20231205-1build1	None known
`libpff` Ubuntu:26.04:LTS	All versions, plus listed versions 20180714-3.1build220231205-120231205-1build1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-116736 is a medium vulnerability (CVSS 6.9) in Libyal Libpff, published October 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. No source names a fixed version.

References

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