Skip to main content

ImageMagick CVE-2026-56365

| EUVDEUVD-2026-40448 MEDIUM
Memory Leak (CWE-401)
2026-06-30 VulnCheck GHSA-hq73-7c65-p9cq
Denial Of Service Red Hat Imagemagick Suse
6.3
CVSS 4.0 · Vendor: VulnCheck
Share

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
5.3 MEDIUM

Network-reachable via image upload services with no auth required; sole impact is low-severity availability via memory leak, no C or I impact.

3.1 AV:N/AC:L/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
3.7 MEDIUM
AV:N/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

2
Patch available
Jul 01, 2026 - 02:16 EUVD
Analysis Generated
Jun 30, 2026 - 23:34 vuln.today

DescriptionCVE.org

ImageMagick before 7.1.2-19 contains a memory leak vulnerability in the PNG encoder when writing MNG images. Attackers can trigger the encoder failure condition to exhaust memory resources and cause denial of service.

AnalysisAI

Memory exhaustion via denial of service in ImageMagick before 7.1.2-19 allows remote attackers to trigger a persistent memory leak in the PNG encoder by supplying crafted MNG image input that induces an encoder failure condition. Affected deployments include any service that accepts user-supplied images and processes them through ImageMagick's MNG write path. No public exploit code or active exploitation has been identified at time of analysis, but the network-reachable attack surface in image-processing pipelines makes this a realistic DoS risk against unpatched instances.

Technical ContextAI

ImageMagick (cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*) is a widely deployed open-source image manipulation library and CLI toolset. The vulnerability resides in the PNG encoder code path specifically invoked when writing MNG (Multiple-image Network Graphics) format output. CWE-401 (Missing Release of Memory after Effective Lifetime) identifies the root cause: when the PNG encoder encounters a failure condition during MNG image writing, it exits the error path without freeing previously allocated heap memory. An attacker who can repeatedly invoke this code path - for example by submitting images to a web service that converts or processes them - can accumulate unreleased allocations and eventually exhaust the process's addressable memory. The CVSS 4.0 vector (AV:N/AC:H/AT:P) reflects that the vulnerable code path requires a specific encoder state to be reached, not simply any image input.

RemediationAI

Upgrade ImageMagick to version 7.1.2-19 or later; this is the vendor-confirmed fixed release per the GitHub security advisory at https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-x928-4434-crqj. For systems where an immediate upgrade is not possible, a targeted workaround is to disable or block MNG output in the ImageMagick policy file (policy.xml) by adding a deny rule for the MNG coder: this prevents the vulnerable PNG encoder path from being invoked entirely, with the trade-off of breaking any legitimate MNG write functionality. Additionally, deploying ImageMagick within resource-controlled containers or systemd units with memory limits (e.g., MemoryMax) can cap the blast radius of repeated exploitation attempts, preventing host-level memory exhaustion at the cost of service restarts under attack. Internet-facing image upload endpoints should enforce server-side output format restrictions independent of ImageMagick's own coders.

More in Imagemagick

View all
CVE-2016-3714 HIGH POC
8.4 May 05

The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT coders in ImageMagick before 6.
CVE-2016-3718 MEDIUM POC
5.5 May 05

The (1) HTTP and (2) FTP coders in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allow remote attackers to conduct

CVE-2016-3715 MEDIUM POC
5.5 May 05

The EPHEMERAL coder in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allows remote attackers to delete arbitrary fi
CVE-2017-15277 MEDIUM POC
6.5 Oct 12

ReadGIFImage in coders/gif.c in ImageMagick 7.0.6-1 and GraphicsMagick 1.3.26 leaves the palette uninitialized when proc
CVE-2016-5841 CRITICAL POC
9.8 Dec 13

Integer overflow in MagickCore/profile.c in ImageMagick before 7.0.2-1 allows remote attackers to cause a denial of serv
CVE-2016-3717 MEDIUM POC
5.5 May 05

The LABEL coder in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allows remote attackers to read arbitrary files vi
CVE-2016-5118 CRITICAL
9.8 Jun 10

The OpenBlob function in blob.c in GraphicsMagick before 1.3.24 and ImageMagick allows remote attackers to execute arbit
CVE-2016-5689 CRITICAL POC
9.8 Dec 13

The DCM reader in ImageMagick before 6.9.4-5 and 7.x before 7.0.1-7 allows remote attackers to have unspecified impact b
CVE-2016-5690 CRITICAL POC
9.8 Dec 13

The ReadDCMImage function in DCM reader in ImageMagick before 6.9.4-5 and 7.x before 7.0.1-7 allows remote attackers to

CVE-2016-5691 CRITICAL POC
9.8 Dec 13

The DCM reader in ImageMagick before 6.9.4-5 and 7.x before 7.0.1-7 allows remote attackers to have unspecified impact b
CVE-2017-14138 CRITICAL POC
9.8 Sep 04

ImageMagick 7.0.6-5 has a memory leak vulnerability in ReadWEBPImage in coders/webp.c because memory is not freed in cer
CVE-2026-23876 CRITICAL POC
9.8 Jan 20

Heap buffer overflow in ImageMagick's XBM image decoder (ReadXBMImage) lets remote attackers write attacker-controlled d

Same weakness CWE-401 – Memory Leak

View all
CVE-2020-13934 HIGH
7.5
CVE-2016-4232 HIGH POC
7.5
CVE-2024-25450 HIGH POC
8.8
CVE-2023-33718 HIGH POC
8.8
CVE-2019-6128 HIGH POC
8.8
CVE-2026-67183 HIGH POC
8.7
CVE-2023-34451 HIGH POC
8.2
CVE-2023-41484 HIGH POC
8.1

Same technique Denial Of Service

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
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 High Performance Computing 15 SP4-ESPOS Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Fixed
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Fixed
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Fixed

Share

CVE-2026-56365 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy