Is CVE-2026-33899 in the CISA KEV catalog?

No. CVE-2026-33899 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-33899?

CVE-2026-33899 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2026-33899?

CVE-2026-33899 has an EPSS score of 0.43% (34th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-33899?

Upgrade imagemagick on debian 11 to 8:6.9.11.60+dfsg-1.3+deb11u12 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2026-33899

MEDIUM

5.3

CVSS v3

NVD

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-189 and 6.9.13-44, when `Magick` parses an XML file it is possible that a single zero byte is written out of the bounds. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

CWE-122Heap-based Buffer Overflow CWE-191

How to fix

Remediation Available

imagemagickDebian

Fixed in:8:6.9.11.60+dfsg-1.3+deb11u12CVE-2026-33899

Fixed in:8:6.9.11.60+dfsg-1.6+deb12u9CVE-2026-33899

Fixed in:8:7.1.1.43+dfsg1-1+deb13u8CVE-2026-33899

Fixed in:8:7.1.2.19+dfsg1-1CVE-2026-33899

ImageMagick Q16Windows application

Affected:7.0.0-0 7.1.2-19Fixed in:7.1.2-19ImageMagick Studio LLC

Affected:6.9.13-44Fixed in:6.9.13-44ImageMagick Studio LLC

ImageMagick Q16-HDRIWindows application

Affected:7.0.0-0 7.1.2-19Fixed in:7.1.2-19ImageMagick Studio LLC

Affected:6.9.13-44Fixed in:6.9.13-44ImageMagick Studio LLC

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.43%probability of exploitation in 30 days

34thpercentile

Low risk: more likely to be exploited than 34% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Release Notes2

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-17.