CVE-2025-46646: In Artifex Ghostscript before 10.05.0, decode_utf8 in base/gp_utf8.c mishandles overlong UTF-8 encoding

Q: How do I fix CVE-2025-46646?

ghostscript: upgrade to 10.05.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-46646 being exploited?

CVE-2025-46646 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-2025-46646 affect?

CVE-2025-46646 affects ghostscript. Severity is medium (CVSS 4.5). In Artifex Ghostscript before 10.05.0, decode_utf8 in base/gp_utf8.c mishandles overlong UTF-8 encoding. NOTE: this issue exists because of an incomplete fix for CVE-2024-46954.

Q: How urgent is CVE-2025-46646?

Priority 18/100. No elevated risk signals yet.

Routine

MEDIUM 4.5UPGRADE

CVE-2025-46646 is a medium-severity flaw (CVSS 4.5) affecting ghostscript. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Artifex Ghostscript before 10.05.0, decode_utf8 in base/gp_utf8.c mishandles overlong UTF-8 encoding. NOTE: this issue exists because of an incomplete fix for CVE-2024-46954.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.5 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-24
Published	2025-04-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: artifex

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-26 15:15 UTCPublished CVE record published
2026-06-17 09:26 UTCUpdated Record last modified

artifex ghostscript UPGRADE

Affected: < 10.05.0

Fixed in: 10.05.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 10.05.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ghostscript

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-2025-46646?

ghostscript: upgrade to 10.05.0. Exact commands for each OS are on this page.

Is CVE-2025-46646 being exploited?

CVE-2025-46646 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-2025-46646 affect?

CVE-2025-46646 affects ghostscript. Severity is medium (CVSS 4.5). In Artifex Ghostscript before 10.05.0, decode_utf8 in base/gp_utf8.c mishandles overlong UTF-8 encoding. NOTE: this issue exists because of an incomplete fix for CVE-2024-46954.

How urgent is CVE-2025-46646?

Priority 18/100. No elevated risk signals yet.

Software pages

Ghostscript vulnerabilities

Related CVEs

CVE-2025-59800 MEDIUM 4.3 UPGRADE In Artifex Ghostscript through 10.05.1, ocr_begin_page in devices/gdevpdfocr.c has an integer overflow that le
CVE-2025-59799 MEDIUM 4.3 UPGRADE Artifex Ghostscript through 10.05.1 has a stack-based buffer overflow in pdfmark_coerce_dest in devices/vector
CVE-2025-59798 MEDIUM 4.3 UPGRADE Artifex Ghostscript through 10.05.1 has a stack-based buffer overflow in pdf_write_cmap in devices/vector/gdev
CVE-2025-48708 MEDIUM 4.0 UPGRADE gs_lib_ctx_stash_sanitized_arg in base/gslibctx.c in Artifex Ghostscript before 10.05.1 lacks argument sanitiz
CVE-2025-27837 CRITICAL 9.8 UPGRADE An issue was discovered in Artifex Ghostscript before 10.05.0

References

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