---
id: CVE-2017-12864
aliases:
  - GHSA-267x-w5hx-8hjr
  - PYSEC-2026-2804
  - PYSEC-2026-697
title: Integer Overflow or Wraparound in OpenCV
summary: Integer Overflow or Wraparound in OpenCV
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
vendor: opencv-python
product: opencv-python
ecosystem: pip
affected:
  - opencv-python < 3.3.1.11
  - opencv-contrib-python < 3.3.1.11
patched:
  - opencv-python 3.3.1.11
  - opencv-contrib-python 3.3.1.11
published: '2021-10-12'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:49:08.939282654Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-267x-w5hx-8hjr'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2017-12864'
  - url: 'https://github.com/opencv/opencv/issues/9372'
  - url: 'https://github.com/opencv/opencv/pull/9376'
  - url: 'https://github.com/opencv/opencv-python'
  - url: 'https://lists.debian.org/debian-lts-announce/2018/07/msg00030.html'
  - url: 'https://lists.debian.org/debian-lts-announce/2021/10/msg00028.html'
  - url: 'https://security.gentoo.org/glsa/201712-02'
tags:
  - osv
  - pip
epss: 0.02722
epssPercentile: 0.85332
ingestedAt: '2026-07-08T18:25:44.148Z'
---

## Overview

In opencv/modules/imgcodecs/src/grfmt_pxm.cpp, function ReadNumber did not checkout the input length, which lead to integer overflow. If the image is from remote, may lead to remote code execution or denial of service. This affects OpenCV 3.3 (corresponding with OpenCV-Python version 3.3.0.9) and earlier.

## Affected packages

- `opencv-python < 3.3.1.11`
- `opencv-contrib-python < 3.3.1.11`

## Remediation

Upgrade to a patched release:

- `opencv-python 3.3.1.11`
- `opencv-contrib-python 3.3.1.11`