---
id: CVE-2026-120431
title: 'Netpbm before 10.86.51, 11.02.29, and 11.15.07 sgitopnm Heap Buffer Overflow'
summary: >-
  Netpbm before 10.86.51, 11.x before 11.02.29, and 11.03 before 11.15.07
  contains a heap-based buffer overflow in sgitopnm's readChannels() function
  when processing RLE-compressed SGI images. Attackers can supply crafted SGI
  files with ov…
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-122
vendor: Netpbm
product: Netpbm
affected:
  - Netpbm < 10.86.51
  - Netpbm >= 11.0 < 11.02.29
  - Netpbm >= 11.03 < 11.15.07
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-06T19:27:23.324500Z'
published: '2026-11-02'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T19:28:27.751Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120431'
references:
  - url: 'https://sourceforge.net/p/netpbm/code/5317/'
  - url: 'https://svn.code.sf.net/p/netpbm/code/!svn/bc/5319/stable/doc/HISTORY'
  - url: 'https://svn.code.sf.net/p/netpbm/code/!svn/bc/5318/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/5316/trunk/converter/other/sgitopnm.c
  - url: >-
      https://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.29-and-11.15.07-sgitopnm-heap-buffer-overflow
    label: >-
      VulnCheck Advisory: Netpbm before 10.86.51, 11.02.29, and 11.15.07
      sgitopnm Heap Buffer Overflow
tags:
  - cve.org
epss: 0.00149
epssPercentile: 0.04083
ingestedAt: '2026-11-05T19:30:42.653Z'
---

## Overview

Netpbm before 10.86.51, 11.x before 11.02.29, and 11.03 before 11.15.07 contains a heap-based buffer overflow in sgitopnm's readChannels() function when processing RLE-compressed SGI images. Attackers can supply crafted SGI files with oversized offset table lengths to write controlled data past the heap buffer, causing crashes or potential code execution.

## Affected

- `Netpbm < 10.86.51`
- `Netpbm >= 11.0 < 11.02.29`
- `Netpbm >= 11.03 < 11.15.07`

## Remediation

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