CVE-2026-7233 MEDIUM

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

Vendor Artifex
Product MuPDF
Weakness CWE-125
Published April 28, 2026
Last update May 5, 2026

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was determined in Artifex MuPDF up to 1.28.0. 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.

Key dates

02Disclosure timeline

April 28, 2026 CVE published
May 5, 2026 Record updated