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Vulnerability · Published Apr 28, 2026 · Assigned by VulDB

CVE-2026-7233Artifex MuPDF CFF Index subset-cff.c fz_subset_cff_for_gids out-of-bounds

Low 3.3

In plain English

A low-severity out-of-bounds read in MuPDF from Artifex. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.2%top 85.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in Artifex MuPDF. The impacted element is the function fz_subset_cff_for_gids of the file subset-cff.c of the component CFF Index Handler. This manipulation causes out-of-bounds read. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through a bug report but has not responded yet.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12mupdfno fix listedDEBIAN-CVE-2026-7233
Debian:13mupdfno fix listedDEBIAN-CVE-2026-7233
Debian:14mupdfno fix listedDEBIAN-CVE-2026-7233
Ubuntu:25.10mupdfno fix listedUBUNTU-CVE-2026-7233
Ubuntu:26.04:LTSmupdfno fix listedUBUNTU-CVE-2026-7233
Ubuntu:26.10mupdfno fix listedUBUNTU-CVE-2026-7233

Affected products (as reported)

VendorProductVersions
Artifex MuPDF 1.24.01.24.11.24.21.24.31.24.41.24.51.24.61.24.7

Weakness: CWE-125, CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R

References