CVE-2020-27760: Debian Linux

Medium severity, CVSS 5.5. EPSS: 1.4% chance of exploitation in the next 30 days.

In `GammaImage()` of /MagickCore/enhance.c, depending on the `gamma` value, it's possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability. The patch uses the `PerceptibleReciprocal()` to prevent the divide-by-zero from occurring. This flaw affects ImageMagick versions prior to ImageMagick 7.0.8-68.

Affected products

• Debian Debian Linux: version 9.0 only
• ImageMagick ImageMagick: before 6.9.10-68 (fixed in 6.9.10-68); from 7.0.0-0, before 7.0.8-68 (fixed in 7.0.8-68)

Published 2020-12-03. Last modified 2026-06-17.