---
id: CVE-2017-12863
aliases:
  - GHSA-wq8f-wvqp-xvvm
  - PYSEC-2026-2832
  - PYSEC-2026-717
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: '2026-09-10T03:46:45.326261155Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-wq8f-wvqp-xvvm'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2017-12863'
  - url: 'https://github.com/opencv/opencv/issues/9371'
  - 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: '2026-07-08T18:25:53.881Z'
---

## Overview

In opencv/modules/imgcodecs/src/grfmt_pxm.cpp, function PxMDecoder::readData has an integer overflow when calculate src_pitch. If the image is from remote, may lead to remote code execution or denial of service. This affects OpenCV 3.3 (corresponding to OpenCV-Python 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`