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.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Artifex
  • Mupdf

Configuration 1 [-]

cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://artifex.com/ cve-icon cve-icon cve-icon
https://bugs.ghostscript.com/show_bug.cgi?id=709328 cve-icon cve-icon cve-icon
https://github.com/biniamf/pocs/tree/main/mupdf-cff-indexload-oobread cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-7233 cve-icon
https://vuldb.com/submit/802590 cve-icon cve-icon cve-icon
https://vuldb.com/vuln/359840 cve-icon cve-icon cve-icon
https://vuldb.com/vuln/359840/cti cve-icon cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-7233 cve-icon
History

Wed, 29 Apr 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 28 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Low

Tue, 28 Apr 2026 06:30:00 +0000

Type Values Removed Values Added
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.
Title Artifex MuPDF CFF Index subset-cff.c fz_subset_cff_for_gids out-of-bounds
First Time appeared Artifex
Artifex mupdf
Weaknesses CWE-119
CWE-125
CPEs cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:*
Vendors & Products Artifex
Artifex mupdf
References
Metrics cvssV2_0

{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 3.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 3.3, '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'}

cvssV4_0

{'score': 4.8, '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-04-28T06:00:18.874Z

Updated: 2026-04-29T15:15:10.459Z

Reserved: 2026-04-27T17:00:07.970Z

Link: CVE-2026-7233

cve-icon Vulnrichment

Updated: 2026-04-29T15:14:50.739Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-28T07:16:04.067

Modified: 2026-04-29T17:15:24.610

Link: CVE-2026-7233

cve-icon Redhat

Severity : Low

Publid Date: 2026-04-28T06:00:18Z

Links: CVE-2026-7233 - Bugzilla