---
id: CVE-2026-120432
title: >-
  Netpbm before 10.86.51, 11.02.30, and 11.15.08 Integer Overflow in
  winicontopam
summary: >-
  Netpbm before 10.86.51, 11.02.30, and 11.15.08 contains an integer overflow
  vulnerability in winicontopam that allows attackers to corrupt heap memory via
  oversized ICO/CUR dimensions. Attackers can supply a crafted icon file with
  width …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-190
vendor: Netpbm
product: Netpbm
affected:
  - Netpbm >= 10.63 < 10.86.51
  - Netpbm >= 11.0 < 11.02.30
  - Netpbm >= 11.03 < 11.15.08
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-02T17:10:13.937610Z'
published: '2026-11-02'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T17:34:33.382Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120432'
references:
  - url: 'https://sourceforge.net/p/netpbm/code/5335/'
  - url: 'https://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY'
  - url: 'https://svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY'
  - url: >-
      https://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY
  - url: >-
      https://svn.code.sf.net/p/netpbm/code/!svn/bc/5334/trunk/converter/other/winicontopam.c
  - url: >-
      https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-integer-overflow-in-winicontopam
    label: >-
      VulnCheck Advisory: Netpbm before 10.86.51, 11.02.30, and 11.15.08 Integer
      Overflow in winicontopam
tags:
  - cve.org
epss: 0.0017
epssPercentile: 0.06355
ingestedAt: '2026-11-05T19:30:42.734Z'
---

## Overview

Netpbm before 10.86.51, 11.02.30, and 11.15.08 contains an integer overflow vulnerability in winicontopam that allows attackers to corrupt heap memory via oversized ICO/CUR dimensions. Attackers can supply a crafted icon file with width or height above 32767, wrapping int16_t loop counters into negative row buffer indices to cause crashes or potential code execution.

## Affected

- `Netpbm >= 10.63 < 10.86.51`
- `Netpbm >= 11.0 < 11.02.30`
- `Netpbm >= 11.03 < 11.15.08`

## Remediation

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