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Medium · 6.5 Public exploit CVE-2025-46206 EUVD-2025-23520GHSA-m6hm-534h-7mxm

An issue in Artifex mupdf 1.25.6, 1.25.5 allows a remote attacker to cause a denial of service via an infinite recursion in the `mutool cle…

Published Aug 4, 2025 · Updated Jul 5, 2026 · Assigned by mitre

Package: mupdf Package: mupdf Ecosystem: Debian Ecosystem: Ubuntu

Description

An issue in Artifex mupdf 1.25.6, 1.25.5 allows a remote attacker to cause a denial of service via an infinite recursion in the `mutool clean` utility. When processing a crafted PDF file containing cyclic /Next references in the outline structure, the `strip_outline()` function enters infinite recursion

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 mupdf 1.25.1+ds1-7 —
Debian 13 mupdf No fix yet —
Debian 12 mupdf No fix yet —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu Pro 24.04 LTS mupdf 1.23.10+ds1-1ubuntu0.1~esm1 USN-7888-1
Ubuntu Pro 22.04 LTS mupdf 1.19.0+ds1-2ubuntu0.1~esm1 USN-7888-1
Ubuntu Pro 20.04 LTS mupdf 1.16.1+ds1-1ubuntu1+esm2 USN-7888-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 18.04 LTS mupdf 1.12.0+ds1-1ubuntu0.1~esm2 USN-7888-1

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

References