CVE-2026-111678

Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing

4.8 Medium

Antiword through 0.37 contains a stack out-of-bounds read vulnerability in vGet8PapInfo and vGet8ChrInfo in prop8.c because FKP run counts and grpprl offsets are not bounded. Attackers can supply a crafted .doc file with malicious FKP pages to read past the 512-byte stack buffer, crashing antiword or corrupting style parsing.

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: None
Integrity: None
Availability: Low

Exploit likelihood

0.22%Up 0.1 points since Oct 17, 2026

What each source reports

CVE List Score used 4.8

Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing

Record: CVE-2026-111678
CVSS 4.0: 4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2026-102969 4.8

Record: EUVD-2026-102969
CVSS 4.0: 4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-gmg3-h7rv-2cc6 4.8

Antiword through 0.37 contains a stack out-of-bounds read vulnerability in vGet8PapInfo and...

Record: GHSA-gmg3-h7rv-2cc6
CVSS 4.0: 4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

NVD 4.8

Record: CVE-2026-111678
CVSS 4.0: 4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

OSV 4.8

Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing

Record: CVE-2026-111678
CVSS 4.0: 4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness: CWE-125
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-111678 4.8

Record: DEBIAN-CVE-2026-111678
CVSS 4.0: 4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-111678 4.8

Record: UBUNTU-CVE-2026-111678
CVSS 4.0: 4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`antiword` Debian:12	All versions, plus listed versions 0.37-160.37-170.37-18	None known
`antiword` Debian:13	All versions, plus listed versions 0.37-170.37-18	None known
`antiword` Debian:14	All versions, plus listed versions 0.37-170.37-18	None known
`antiword` Ubuntu:16.04:LTS	All versions, plus listed versions 0.37-100.37-11	None known
`antiword` Ubuntu:18.04:LTS	All versions, plus listed versions 0.37-110.37-11build1	None known
`antiword` Ubuntu:20.04:LTS	All versions, plus listed versions 0.37-150.37-16	None known
`antiword` Ubuntu:22.04:LTS	All versions, plus listed versions 0.37-16	None known
`antiword` Ubuntu:24.04:LTS	All versions, plus listed versions 0.37-16	None known
`antiword` Ubuntu:26.10	All versions, plus listed versions 0.37-17	None known
`antiword` Ubuntu:26.04:LTS	All versions, plus listed versions 0.37-17	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-2026-111678 is a medium vulnerability (CVSS 4.8) in Adri Van Os Antiword, published October 16, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. No source names a fixed version.

References

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