CVE-2021-20313 Information disclosure in ImageMagick

What is CVE-2021-20313?

CVE-2021-20313 is a high-severity vulnerability in Debian Debian Linux, published on 11 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in ImageMagick in versions before 7.0.11. A potential cipher leak when the calculate signatures in TransformSignature is possible. The highest threat from this vulnerability is to data confidentiality.

Weakness: CWE-200

Which versions are affected by CVE-2021-20313?

It affects 2 products.

Products include Debian Debian Linux, Imagemagick Imagemagick.

How do I fix CVE-2021-20313?

Upgrade to a fixed version.

Is CVE-2021-20313 being exploited?

There is no known exploitation of CVE-2021-20313 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

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• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-20313, GHSA-vrm6-xcmv-x82r, JLSEC-2026-888, UBUNTU-CVE-2021-20313.