CVE-2026-7233: A vulnerability was determined in Artifex MuPDF up to 1.28.0

Q: How do I fix CVE-2026-7233?

mupdf: upgrade to newer than 1.27.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-7233 being exploited?

CVE-2026-7233 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-7233 affect?

CVE-2026-7233 affects mupdf. Severity is low (CVSS 3.3). 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 c

Q: How urgent is CVE-2026-7233?

Priority 20/100. Public exploit reference

Routine

LOW 3.3UPGRADE

CVE-2026-7233 is a low-severity flaw (CVSS 3.3) affecting mupdf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-119, CWE-125
Published	2026-04-28
Last modified	2026-10-26

Publisher (CNA): VulDB · Vendor: artifex

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-28 07:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

artifex mupdf UPGRADE

Affected: <= 1.27.2

Fixed in: newer than 1.27.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mupdf || rpm -q mupdf || mupdf --version

2. UPGRADE to newer than 1.27.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mupdf

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mupdf

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-7233?

mupdf: upgrade to newer than 1.27.2. Exact commands for each OS are on this page.

Is CVE-2026-7233 being exploited?

CVE-2026-7233 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-7233 affect?

CVE-2026-7233 affects mupdf. Severity is low (CVSS 3.3). 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 c

How urgent is CVE-2026-7233?

Priority 20/100. Public exploit reference

Related CVEs

CVE-2026-40505 LOW 3.3 UPGRADE MuPDF before 1.27 contains an ANSI injection vulnerability in mutool that allows attackers to inject arbitrary
CVE-2025-71382 MEDIUM 6.5 UPGRADE MuPDF before 1.27.0-rc1 contains an uncontrolled recursion vulnerability in the EPUB CSS rendering engine that

References

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