CVE-2026-3308 json
CVE-2026-3308
published 2026-03-31 7 mo ago modified 2026-07-25 3 mo ago also EUVD-2026-17412
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 12%
- public exploits
- 0
- none known
Summary
An integer overflow vulnerability in 'pdf-image.c' in Artifex's MuPDF version 1.27.0 allows an attacker to maliciously craft a PDF that can trigger an integer overflow within the 'pdf_load_image_imp' function. This allows a heap out-of-bounds write that could be exploited for arbitrary code execution.
Patch / fix
- mupdf Debian 12 1.21.1+ds2-1+deb12u1
- mupdf Debian 13 1.25.1+ds1-6+deb13u1
- mupdf Debian 14 1.27.0+ds1-4
debian advisories DEBIAN-CVE-2026-3308
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-3308 updated cvss 6.3
mupdf: MuPDF: Arbitrary code execution via integer overflow with a crafted PDF
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
- Artifex Software Inc. *PyMuPDF* MuPDF
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
- github.com /ArtifexSoftware/mupdf/commit/a26f0142e7d390d4a82c6e5ae0e312e07cc4ec85
- cgit.ghostscript.com /cgi-bin/cgit.cgi/mupdf.git/commit/?id=a26f0142e7d390d4a82c6e5ae0e312e07cc4ec85
- github.com /ArtifexSoftware/mupdf
- kb.cert.org /vuls/id/951662
- lists.debian.org /debian-lts-announce/2026/04/msg00020.html
Sources
- CVE List CVE-2026-3308
- NVD CVE-2026-3308
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.