CVE-2020-27766

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-12-04 · updated 2026-06-17
Weakness: CWE-190

Description

A flaw was found in ImageMagick in MagickCore/statistic.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type `unsigned long`. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.8-69.

Affected products

Debian Linux: 9.0
ImageMagick: before 6.9.10-69; from 7.0.0-0 before 7.0.8-69 — fixed in 6.9.10-69, 7.0.8-69

How to fix

Upgrade to a fixed version: ImageMagick 6.9.10-69, 7.0.8-69. Check the vendor advisory for mitigations.

References

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