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ImageMagick CVE-2026-61871

| EUVDEUVD-2026-44619 MEDIUM
Memory Leak (CWE-401)
2026-07-15 VulnCheck GHSA-42mf-mh48-7gjj
Denial Of Service Imagemagick Red Hat Suse
6.3
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
6.3 MEDIUM
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/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
3.7 LOW

Network-reachable via file upload with no auth needed (PR:N), but AC:H because triggering a malloc failure requires specific memory pressure conditions; availability impact is Low with no C/I exposure.

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

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
Jul 15, 2026 - 13:03 EUVD
Analysis Generated
Jul 15, 2026 - 12:20 vuln.today
CVE Published
Jul 15, 2026 - 11:25 cve.org
MEDIUM 6.3

DescriptionCVE.org

ImageMagick before 7.1.2-26 and 6.9.13-51 contains a memory leak in the ICON decoder that occurs when a memory allocation fails. Processing a crafted ICON file that triggers an allocation failure leaks memory, which may lead to a denial of service.

AnalysisAI

Memory leak in ImageMagick's ICON decoder exposes services that process user-supplied images to a potential denial of service. Both the 7.x and 6.x release branches are affected - specifically versions before 7.1.2-26 and 6.9.13-51 respectively. An unauthenticated remote attacker (per CVSS PR:N) who can supply a crafted ICON file to an ImageMagick-processing endpoint can repeatedly trigger allocation failures that are never cleaned up, gradually exhausting process memory. No public exploit or active exploitation has been identified at time of analysis.

Technical ContextAI

ImageMagick (CPE: cpe:2.3:a:imagemagick:imagemagick) is a widely used open-source image processing library and CLI tool. The ICON decoder is the component responsible for parsing Windows ICO/ICON format files. CWE-401 (Missing Release of Memory after Effective Lifetime) is the root cause: when a memory allocation fails during ICON decoding, the error path does not properly free previously allocated buffers, creating a resource leak. In long-running processes or services that handle many requests - such as web applications using ImageMagick via PHP, Ruby, or Python bindings - repeated exploitation of this path accumulates leaked memory until the process is terminated or becomes unresponsive. The CVSS 4.0 vector's AT:P (attack requirements present) reflects that triggering a genuine allocation failure requires some level of memory pressure or resource contention on the target system.

RemediationAI

Upgrade to ImageMagick 7.1.2-26 or later (for 7.x deployments) or 6.9.13-51 or later (for 6.x deployments) as documented in the vendor security advisory at https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-h58x-r7f7-rh84. These are the exact fix versions confirmed by the vendor. For environments where immediate patching is not feasible, a practical compensating control is to restrict or disable processing of ICON format files at the application or policy layer - ImageMagick's policy.xml can be used to deny the ICON coder entirely (e.g., adding a deny policy for the ICO delegate), with the trade-off that ICO/ICON file processing will be rejected. Additionally, enforcing strict memory limits on ImageMagick worker processes (via ulimit, cgroups, or container resource constraints) can bound the impact of repeated leaks, though this does not eliminate the vulnerability.

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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
openSUSE Leap 16.0 Fixed
openSUSE Tumbleweed Fixed

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CVE-2026-61871 vulnerability details – vuln.today
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