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 products
artifex: mupdf
References9
- bugs.ghostscript.com/show_bug.cgi?id=709328 ExploitMitigationThird Party Advisory
- github.com/biniamf/pocs/tree/main/mupdf-cff-indexload-oobread Exploit
- vuldb.com/submit/802590 ExploitMitigationThird Party AdvisoryVDB Entry
- vuldb.com/vuln/359840 ExploitMitigationThird Party AdvisoryVDB Entry
- bugs.ghostscript.com/show_bug.cgi?id=709328 ExploitMitigationThird Party Advisory
- vuldb.com/submit/802590 ExploitMitigationThird Party AdvisoryVDB Entry
- artifex.com/ Product
- vuldb.com/cve/CVE-2026-7233
- vuldb.com/vuln/359840/cti Permissions RequiredVDB Entry
Metrics
- CVSS 3.1
-
6.1
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H - CVSS 4.0
-
1.9
LOW
Score source: CNA
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 15 · as of 13 November 2026
- CWE
- CWE-119CWE-125
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.