EUVD-2026-40445
GHSA-4h5w-9gq6-38f8
Severity by source
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
Local-only vector, low complexity once local access obtained, no privileges required, user must actively process malicious image, low availability impact only, no scope change.
Primary rating from Vendor (VulnCheck).
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
Lifecycle Timeline
2DescriptionCVE.org
ImageMagick before 7.1.2-19 contains an off-by-one error in morphology validation allowing out-of-bounds heap buffer reads. Attackers can trigger heap buffer overflow by providing incorrect morphology parameters causing single pixel memory access violations.
AnalysisAI
Heap buffer out-of-bounds read in ImageMagick before 7.1.2-19 via off-by-one error in morphology validation allows local attackers with user interaction to trigger denial of service. The vulnerability stems from incorrect morphology parameters causing single pixel memory access violations within heap buffers, potentially leading to application crashes or information disclosure through controlled reads of adjacent heap memory.
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local system access to place a malicious image where a user will process it, plus user interaction to invoke ImageMagick against that image. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:L/AC:L/PR:N/UI:P) indicates this is strictly a local vulnerability requiring user interaction, substantially limiting real-world exploitation scope compared to network-accessible flaws. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with local system access creates an image file with specially-crafted morphology parameters designed to trigger the off-by-one error. The attacker then socially engineers or tricks a legitimate user into processing this malicious image using ImageMagick, such as through a file shared on a network drive or in an email attachment routed to an image processing pipeline. … |
| Remediation | Upgrade ImageMagick to version 7.1.2-19 or later to receive the off-by-one validation fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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