---
id: CVE-2017-1000450
aliases:
  - GHSA-m43c-649m-pm48
  - PYSEC-2026-2825
  - PYSEC-2026-712
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: '2026-09-10T03:49:09.288570897Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-m43c-649m-pm48'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2017-1000450'
  - url: 'https://github.com/opencv/opencv/issues/9723'
  - url: >-
      https://github.com/opencv/opencv/pull/9726/commits/c58152d94ba878b2d7d76bcac59146312199b9eb
  - url: >-
      https://github.com/blendin/pocs/blob/master/opencv/0.OOB_Write_FillUniColor
  - url: 'https://github.com/opencv/opencv-python'
  - url: 'https://lists.debian.org/debian-lts-announce/2018/01/msg00008.html'
  - url: 'https://lists.debian.org/debian-lts-announce/2018/07/msg00030.html'
  - url: 'https://lists.debian.org/debian-lts-announce/2021/10/msg00028.html'
tags:
  - osv
  - pip
epss: 0.03261
epssPercentile: 0.8784
ingestedAt: '2026-07-08T18:25:51.114Z'
---

## Overview

In opencv/modules/imgcodecs/src/utils.cpp, functions FillUniColor and FillUniGray do not check the input length, which can 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 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`