CVE-2026-7233: artifex mupdf

Vulnerability summary

CVE-2026-7233 is a medium (CVSS 6.1) vulnerability in artifex mupdf. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.6% of scored vulnerabilities. 4 public exploits are recorded.

Timeline

1. 28-04-2026
   PublishedVulnerability first disclosed.
2. 05-05-2026
   Last modifiedVulnerability information updated.

Description

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.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.