MupdfApplication · Artifex

CVE-2025-46206

MEDIUM · 6.5 CVSS v3.1 Published 2025-08-04
Fix available
A fix is available. Upgrade to after 1.25.6 or later.
See remediation →
72/100
Remediation priority · Elevated
Public exploit Remotely reachable No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
MupdfApplication
Affected:<= 1.25.6

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 1.25.6
Recommended fix Moderate confidence

Any version higher than 1.25.7 (the first fixed release after the vulnerability was addressed)

  1. 1. Identify all systems running mupdf version 1.25.6 or earlier
  2. 2. Obtain the latest stable release of mupdf from the official repository (github.com/ArtifexSoftware/mupdf)
  3. 3. Download the updated mupdf package for your operating system
  4. 4. Replace the existing mupdf binaries and libraries with the new version
  5. 5. Verify that mutool clean processes PDF files without entering infinite recursion
  6. 6. Test any integrated applications that depend on mupdf functionality
Caveat Minor: Verify custom integrations still function correctly after upgrade, as internal API behavior may have changed

Generated from the published advisory — verify against the referenced sources before acting.

We can identify the exact fixed release, upgrade, and verify it in staging — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-46206 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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