CVE-2021-20224

ImageMagick: integer overflow in ExportIndexQuantum() in MagickCore/quantum-export.c

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 25, 2022

Updated · November 22, 2025

Description

An integer overflow issue was found in ImageMagick's ExportIndexQuantum() function in MagickCore/quantum-export.c. Function calls to GetPixelIndex() could result in outside the range of representable values for the type 'unsigned char.' When ImageMagick processes a crafted pdf file, this issue could lead to undefined behavior or a crash.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-190 · Integer Overflow or Wraparound