CVE-2025-46206 Denial of service in n/a
A remote attacker can cause a denial of service in mupdf via infinite recursion when processing crafted PDF files with cyclic outline references.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-46206?
CVE-2025-46206 is a medium-severity denial of service vulnerability in Artifex Mupdf, published on 4 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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
Weakness: CWE-674
Which versions are affected by CVE-2025-46206?
It affects 1 product.
Products include Artifex Mupdf.
How do I fix CVE-2025-46206?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-46206 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-46206 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Artifex Mupdf
Sources
Also known as DEBIAN-CVE-2025-46206, GHSA-m6hm-534h-7mxm, UBUNTU-CVE-2025-46206.