CVE-2021-3407: Artifex Mupdf

Medium severity, CVSS 5.5. EPSS: 50.2% chance of exploitation in the next 30 days.

A flaw was found in mupdf 1.18.0. Double free of object during linearization may lead to memory corruption and other potential consequences.

Affected products

• Artifex Mupdf: version 1.18.0 only
• Debian Debian Linux: version 9.0 only
• Fedoraproject Fedora: version 32 only; version 33 only; version 34 only

Published 2021-02-23. Last modified 2026-06-17.