Name: CVE-2021-37220: Out-of-bounds Write
Creator: Rapid7
Published: 2021-07-21T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-37220, CWE-787, CVSS 5.5, EPSS 0.00246

MuPDF through 1.18.1 has an out-of-bounds write because the cached color converter does not properly consider the maximum key size of a hash table. This can, for example, be seen with crafted "mutool draw" input.

CVSS Details

CVSS 3.1 Base Score: 5.5
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade mupdf	Jul 30, 2024	Jul 21, 2021
Gentoo Linux	—	Upgrade app-text/mupdf.	Aug 13, 2024	Jul 21, 2021
Ubuntu	—	Upgrade mupdf (Ubuntu Pro)Upgrade libmupdf-dev (Ubuntu Pro)Upgrade mupdf-tools (Ubuntu Pro)	Jun 26, 2025	Jul 21, 2021

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CVSS Details

Covered by Rapid7

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