What’s Vulnerable › Vulnerabilities

CVE-2020-19609

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-21 · updated 2026-06-17
• Weakness: CWE-787

Description

Artifex MuPDF before 1.18.0 has a heap based buffer over-write in tiff_expand_colormap() function when parsing TIFF files allowing attackers to cause a denial of service.

Affected products

• Artifex MuPDF: before 1.18.0 — fixed in 1.18.0
• Debian Linux: 9.0

How to fix

Upgrade to a fixed version: Artifex MuPDF 1.18.0. Check the vendor advisory for mitigations.

References

• http://git.ghostscript.com/?p=mupdf.git%3Bh=b7892cdc7fae62aa57d63ae62144e1f11b5f9275
• https://bugs.ghostscript.com/show_bug.cgi?id=701176
• https://bugs.ghostscript.com/show_bug.cgi?id=703076
• https://lists.debian.org/debian-lts-announce/2021/09/msg00013.html
• http://git.ghostscript.com/?p=mupdf.git%3Bh=b7892cdc7fae62aa57d63ae62144e1f11b5f9275
• https://bugs.ghostscript.com/show_bug.cgi?id=701176
• https://bugs.ghostscript.com/show_bug.cgi?id=703076
• https://lists.debian.org/debian-lts-announce/2021/09/msg00013.html

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