High severity · published Mar 31, 2026
CVE-2026-3308
No description published yet
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MU
MuPDF · Artifex Software Inc. *PyMuPDF*
through 1.27.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3308
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3308
cgit.ghostscript.com
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=a26f0142e7d390d4a82c6e5ae0e312e07cc4ec85
github.com
https://github.com/ArtifexSoftware/mupdf
github.com
https://github.com/ArtifexSoftware/mupdf/commit/a26f0142e7d390d4a82c6e5ae0e312e07cc4ec85
lists.debian.org
https://lists.debian.org/debian-lts-announce/2026/04/msg00020.html
www.kb.cert.org
https://www.kb.cert.org/vuls/id/951662