CVE-2020-27754: Debian Linux

Low severity, CVSS 3.3. EPSS: 1.1% chance of exploitation in the next 30 days.

In IntensityCompare() of /magick/quantize.c, there are calls to PixelPacketIntensity() which could return overflowed values to the caller when ImageMagick processes a crafted input file. To mitigate this, the patch introduces and uses the ConstrainPixelIntensity() function, which forces the pixel intensities to be within the proper bounds in the event of an overflow. This flaw affects ImageMagick versions prior to 6.9.10-69 and 7.0.8-69.

Affected products

• Debian Debian Linux: version 9.0 only
• ImageMagick ImageMagick: before 6.9.10-69 (fixed in 6.9.10-69); from 7.0.8, before 7.0.8-69 (fixed in 7.0.8-69)

Published 2020-12-08. Last modified 2026-06-17.