CVE-2021-20309

HIGH

Imagemagick < 6.9.12 - Divide By Zero

Title source: rule

Description

A flaw was found in ImageMagick in versions before 7.0.11 and before 6.9.12, where a division by zero in WaveImage() of MagickCore/visual-effects.c may trigger undefined behavior via a crafted image file submitted to an application using ImageMagick. The highest threat from this vulnerability is to system availability.

References (3)

[Issue Tracking, Patch, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=1946722

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2021/06/msg00000.html

[Mailing List] https://lists.debian.org/debian-lts-announce/2023/05/msg00020.html

Scores

CVSS v3 7.5

EPSS 0.0024

EPSS Percentile 46.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-369

Status published

Affected Products (2)

imagemagick/imagemagick < 6.9.12

debian/debian_linux

Timeline

Published May 11, 2021

Tracked Since Feb 18, 2026