---
id: CVE-2017-12601
aliases:
  - GHSA-w96g-3p64-63wr
  - PYSEC-2026-2831
  - PYSEC-2026-716
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: '2026-09-10T03:46:45.329720231Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-w96g-3p64-63wr'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2017-12601'
  - url: 'https://github.com/opencv/opencv/issues/9309'
  - url: 'https://github.com/opencv/opencv/pull/9376'
  - url: 'https://github.com/opencv/opencv-python'
  - url: 'https://github.com/opencv/opencv-python/releases/tag/11'
  - url: 'https://github.com/opencv/opencv-python/releases/tag/9'
  - url: 'https://github.com/xiaoqx/pocs/blob/master/opencv.md'
  - 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: 0.02088
epssPercentile: 0.80505
ingestedAt: '2026-07-08T18:25:53.587Z'
---

## Overview

OpenCV (Open Source Computer Vision Library) through 3.3 (corresponding to OpenCV-Python 3.3.0.9) has a buffer overflow in the cv::BmpDecoder::readData function in modules/imgcodecs/src/grfmt_bmp.cpp when reading an image file by using cv::imread, as demonstrated by the 4-buf-overflow-readData-memcpy test case.

## 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`