What’s Vulnerable › Vulnerabilities

CVE-2021-4216

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-08-26 · updated 2026-06-17
• Weakness: CWE-369

Description

A Floating point exception (division-by-zero) flaw was found in Mupdf for zero width pages in muraster.c. It is fixed in Mupdf-1.20.0-rc1 upstream.

Affected products

• Artifex MuPDF: before 1.20.0 — fixed in 1.20.0

How to fix

Upgrade to a fixed version: Artifex MuPDF 1.20.0. Check the vendor advisory for mitigations.

References

• https://bugs.ghostscript.com/show_bug.cgi?id=704834
• https://github.com/ArtifexSoftware/mupdf/commit/22c47acbd52949421f8c7cb46ea1556827d0fcbf
• https://bugs.ghostscript.com/show_bug.cgi?id=704834
• https://github.com/ArtifexSoftware/mupdf/commit/22c47acbd52949421f8c7cb46ea1556827d0fcbf

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