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ImageMagick CVE-2026-56374

| EUVDEUVD-2026-42260 MEDIUM
Out-of-bounds Read (CWE-125)
2026-07-08 disclosure@vulncheck.com GHSA-g4x5-mww6-m42x
Denial Of Service Buffer Overflow Information Disclosure Imagemagick Red Hat Suse
4.8
CVSS 4.0 · Vendor: vulncheck
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Severity by source

Vendor (vulncheck) PRIMARY
4.8 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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
vuln.today AI
4.4 MEDIUM

AV:L because file must be locally processed; UI:R for required processing action; C:L added since CWE-125 OOB read enables heap memory disclosure despite VC:N in provided vector.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
SUSE
3.3 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Red Hat
3.3 LOW
qualitative

Primary rating from Vendor (vulncheck).

CVSS VectorVendor: vulncheck

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

2
Analysis Generated
Jul 08, 2026 - 15:11 vuln.today
Patch available
Jul 08, 2026 - 15:01 EUVD

DescriptionCVE.org

ImageMagick before 7.1.2-19 contains a heap buffer overflow vulnerability in the FTXT encoder due to missing boundary checks when parsing ftxt:format. Remote attackers can trigger an out of bounds read by crafting malicious FTXT image files to cause denial of service or information disclosure.

AnalysisAI

Heap buffer overflow in ImageMagick's FTXT encoder exposes systems to denial of service and potential information disclosure when processing attacker-crafted image files. All ImageMagick versions before 7.1.2-19 are affected due to missing boundary checks when parsing the ftxt:format parameter, allowing an out-of-bounds read (CWE-125) in the FTXT encoder component. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog, though a vendor patch is available at 7.1.2-19.

Technical ContextAI

ImageMagick is a widely-used open-source image processing suite that supports hundreds of image formats. The FTXT encoder handles a specialized text-based image format; the vulnerability arises in the format parameter parsing routine where boundary checks are absent, allowing heap memory beyond the allocated buffer to be read (CWE-125: Out-of-Bounds Read). CPE context from EUVD indicates all releases from version 0 up to but not including 7.1.2-19 are vulnerable. Heap out-of-bounds reads can destabilize the process (DoS via crash) and may leak adjacent heap contents including potentially sensitive data from other in-memory operations, depending on heap layout at the time of processing.

RemediationAI

Upgrade ImageMagick to version 7.1.2-19 or later, which resolves the missing boundary check in the FTXT encoder. The vendor security advisory is at https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-w54j-7wpm-crhj. Where immediate patching is not feasible, operators can restrict processing of FTXT-format files by adding a policy entry in ImageMagick's policy.xml to deny the FTXT coder: this prevents the vulnerable code path from executing but will break any legitimate FTXT processing workflows. Additionally, configuring ImageMagick to run in a sandboxed or resource-limited environment (e.g., seccomp profiles, containers with read-only filesystems, or ulimit constraints) reduces the blast radius of a crash and limits the value of any memory disclosure. Blocking untrusted image uploads from reaching ImageMagick processing pipelines at the application layer is a meaningful compensating control with minimal operational cost.

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Same weakness CWE-125 – Out-of-bounds Read

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CVE-2024-48456 HIGH POC
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Same technique Denial Of Service

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7.8

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7 Fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Fixed
SUSE Linux Enterprise Module for Development Tools 15 SP7 Fixed
SUSE Linux Enterprise Server 15 SP6-LTSS Fixed
SUSE Linux Enterprise Server 16.0 SUSE Linux Enterprise Server for SAP applications 16.0 Fixed

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CVE-2026-56374 vulnerability details – vuln.today
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