UpHeron
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Servers and applications

CVE-2021-20309

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.

Severity
High 7.5
Published
11 May 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
6.9.12, 7.0.11-0
Sources
NVD

Affected software

SoftwareAffected versions
ImageMagickServers and applications · cpe:a:imagemagick:imagemagick
  • Every version before 6.9.12
  • From 7.0.0-0 before 7.0.11-0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-20309
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-20309