---
id: CVE-2026-111677
title: Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c
summary: >-
  Antiword through 0.37 contains a heap out-of-bounds read vulnerability in
  vGet8LstInfo in prop8.c caused by an inverted bounds check on the PlcfLst
  record count. Attackers can supply a crafted Word 8 .doc file claiming up to
  0xffff LSTF …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-125
vendor: Adri van Os
product: antiword
affected:
  - antiword <= 0.37
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T18:30:26.760021Z'
exploitAvailable: true
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:30:58.691Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111677'
references:
  - url: >-
      https://hackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-read
  - url: >-
      https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L799-L825
  - url: >-
      https://www.vulncheck.com/advisories/antiword-through-0.37-heap-out-of-bounds-read-via-vget8lstinfo-in-prop8-c
    label: >-
      VulnCheck Advisory: Antiword through 0.37 Heap Out-of-Bounds Read via
      vGet8LstInfo in prop8.c
tags:
  - cve.org
  - exploit-available
ingestedAt: '2026-10-16T18:43:08.621Z'
---

## Overview

Antiword through 0.37 contains a heap out-of-bounds read vulnerability in vGet8LstInfo in prop8.c caused by an inverted bounds check on the PlcfLst record count. Attackers can supply a crafted Word 8 .doc file claiming up to 0xffff LSTF records in a tiny buffer, causing reads past the heap allocation that crash the process.

## Affected

- `antiword <= 0.37`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.