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ImageMagick CVE-2026-56370

| EUVDEUVD-2026-38756 MEDIUM
Out-of-bounds Read (CWE-125)
2026-06-24 VulnCheck
Denial Of Service RCE Buffer Overflow Information Disclosure Imagemagick Red Hat Suse
Medium
Disputed · 4.8 Vendor: VulnCheck
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Severity by source

Sources disagree (Low–High)
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

Local CLI vector with no required privileges; user interaction required to process input; OOB read yields low confidentiality and availability impact.

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
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Red Hat
3.3 LOW
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: VulnCheck

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

Lifecycle Timeline

3
Patch available
Jun 24, 2026 - 13:01 EUVD
Source Code Evidence Fetched
Jun 24, 2026 - 12:25 vuln.today
Analysis Generated
Jun 24, 2026 - 12:25 vuln.today

DescriptionCVE.org

ImageMagick before 7.1.2-19 contains an out-of-bounds access vulnerability in ConnectedComponentsImage() when processing connected-components artifacts with invalid indices. Attackers can trigger access violations by specifying malformed connected-components definitions via CLI, causing denial of service or potential code execution.

AnalysisAI

Out-of-bounds read in ImageMagick's ConnectedComponentsImage() function allows local attackers to trigger access violations by supplying malformed connected-components artifact definitions via the CLI, leading to denial of service or potential arbitrary code execution. All ImageMagick releases before 7.1.2-19 are affected, as are Magick.NET NuGet packages before 14.12.0. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malformed connected-components artifact with invalid index
Delivery
Deliver input to ImageMagick CLI invocation
Exploit
Trigger OOB read in ConnectedComponentsImage()
Execution
Access violation occurs
Impact
Denial of service or potential code execution
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Vulnerability AssessmentAI

Exploitation Exploitation requires that an attacker control the connected-components:* artifact definitions passed to ImageMagick via the CLI, either directly (local shell access without elevated privileges) or indirectly through an application that constructs ImageMagick CLI invocations from attacker-influenced input. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 4.8 with vector AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N reflects a local, low-complexity attack requiring passive user interaction, with only low availability impact on the vulnerable system. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with the ability to influence CLI arguments passed to an ImageMagick invocation - for example, through a web application that constructs ImageMagick commands incorporating user-supplied parameters, or a batch processing pipeline ingesting attacker-controlled files with embedded artifact metadata - supplies a connected-components:* define containing an out-of-range index. ImageMagick's ConnectedComponentsImage() reads beyond the allocated buffer, causing an access violation that crashes the process or, under suitable memory layout conditions, redirects execution. …
Remediation Vendor-released patch: upgrade ImageMagick to 7.1.2-19 or later. … Detailed patch versions, workarounds, and compensating controls in full report.
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Threat intelligence, references, and detailed analysis are available after sign-in.

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

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Affected

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CVE-2026-56370 vulnerability details – vuln.today
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