---
id: CVE-2017-12862
aliases:
  - GHSA-5rpc-gwh9-q9fg
  - PYSEC-2026-2807
  - PYSEC-2026-699
title: >-
  Improper Restriction of Operations within the Bounds of a Memory Buffer in
  OpenCV
summary: >-
  Improper Restriction of Operations within the Bounds of a Memory Buffer 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: '2026-09-10T03:49:09.082478064Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-5rpc-gwh9-q9fg'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2017-12862'
  - url: 'https://github.com/opencv/opencv/issues/9370'
  - 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: 0.03091
epssPercentile: 0.87105
ingestedAt: '2026-07-08T18:25:46.060Z'
---

## Overview

In modules/imgcodecs/src/grfmt_pxm.cpp, the length of buffer AutoBuffer _src is small than expected, which will cause copy buffer overflow later. 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`