CVE-2026-7233
Artifex MuPDF CFF Index subset-cff.c fz_subset_cff_for_gids out-of-bounds
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.
INFO
Published Date :
April 28, 2026, 7:16 a.m.
Last Modified :
May 5, 2026, 9:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update MuPDF to a version later than 1.28.0.
- Apply vendor patches when available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-7233.
| URL | Resource |
|---|---|
| https://artifex.com/ | Product |
| https://bugs.ghostscript.com/show_bug.cgi?id=709328 | Exploit Mitigation Third Party Advisory |
| https://github.com/biniamf/pocs/tree/main/mupdf-cff-indexload-oobread | Exploit |
| https://vuldb.com/submit/802590 | Exploit Mitigation Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/359840 | Exploit Mitigation Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/359840/cti | Permissions Required VDB Entry |
| https://bugs.ghostscript.com/show_bug.cgi?id=709328 | Exploit Mitigation Third Party Advisory |
| https://vuldb.com/submit/802590 | Exploit Mitigation Third Party Advisory VDB Entry |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-7233 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-7233
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-7233 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-7233 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 05, 2026
Action Type Old Value New Value Added Reference https://bugs.ghostscript.com/show_bug.cgi?id=709328 Added Reference https://vuldb.com/submit/802590 -
Initial Analysis by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:* versions up to (including) 1.27.2 Added Reference Type VulDB: https://artifex.com/ Types: Product Added Reference Type VulDB: https://bugs.ghostscript.com/show_bug.cgi?id=709328 Types: Exploit, Mitigation, Third Party Advisory Added Reference Type VulDB: https://github.com/biniamf/pocs/tree/main/mupdf-cff-indexload-oobread Types: Exploit Added Reference Type VulDB: https://vuldb.com/submit/802590 Types: Exploit, Mitigation, Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/359840 Types: Exploit, Mitigation, Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/359840/cti Types: Permissions Required, VDB Entry -
New CVE Received by [email protected]
Apr. 28, 2026
Action Type Old Value New Value 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. Added CVSS V4.0 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 Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Added CVSS V2 (AV:L/AC:L/Au:S/C:P/I:N/A:N) Added CWE CWE-119 Added CWE CWE-125 Added Reference https://artifex.com/ Added Reference https://bugs.ghostscript.com/show_bug.cgi?id=709328 Added Reference https://github.com/biniamf/pocs/tree/main/mupdf-cff-indexload-oobread Added Reference https://vuldb.com/submit/802590 Added Reference https://vuldb.com/vuln/359840 Added Reference https://vuldb.com/vuln/359840/cti