---
id: CVE-2026-112055
title: >-
  wvWare wv through 1.2.9 Stack Out-of-Bounds Read via wvGetPAPX_FKP and
  wvGetCHPX_FKP
summary: >-
  wvWare wv through 1.2.9 contains a stack-based out-of-bounds read
  vulnerability in wvGetPAPX_FKP and wvGetCHPX_FKP caused by an unvalidated FKP
  run count. Attackers can supply a crafted .doc file with a large crun value to
  read kilobytes…
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: wvWare
product: wv
affected:
  - wv <= 1.2.9
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T12:19:46.319Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112055'
references:
  - url: 'https://hackmd.io/@haindpwn/wv-fkp-crun-stsh-cstd-oob-read'
  - url: 'https://github.com/AbiWord/wv/blob/wv-1-2-9/fkp.c#L122'
  - url: >-
      https://www.vulncheck.com/advisories/wvware-wv-through-1.2.9-stack-out-of-bounds-read-via-wvgetpapx-fkp-and-wvgetchpx-fkp
    label: >-
      VulnCheck Advisory: wvWare wv through 1.2.9 Stack Out-of-Bounds Read via
      wvGetPAPX_FKP and wvGetCHPX_FKP
tags:
  - cve.org
ingestedAt: '2026-10-18T12:41:54.062Z'
---

## Overview

wvWare wv through 1.2.9 contains a stack-based out-of-bounds read vulnerability in wvGetPAPX_FKP and wvGetCHPX_FKP caused by an unvalidated FKP run count. Attackers can supply a crafted .doc file with a large crun value to read kilobytes past the 512-byte stack buffer, crashing applications like AbiWord.

## Affected

- `wv <= 1.2.9`

## Remediation

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