CVE-2026-7233

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.

CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0002

Probability of exploitation

0.04%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
artifex	mupdf	< 1.27.2

References

Exploits

https://bugs.ghostscript.com/show_bug.cgi?id=709328 https://github.com/biniamf/pocs/tree/main/mupdf-cff-indexload-oobread https://vuldb.com/submit/802590 https://vuldb.com/vuln/359840 https://bugs.ghostscript.com/show_bug.cgi?id=709328 https://vuldb.com/submit/802590

Other References

https://artifex.com/ https://vuldb.com/vuln/359840/cti

Frequently Asked Questions

What is CVE-2026-7233? +

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. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2026-7233? +

CVE-2026-7233 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0002, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-7233? +

CVE-2026-7233 affects products from artifex, specifically: mupdf. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-7233? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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