EUVD-2026-42889
GHSA-j6f7-9c5w-9r2q
Severity by source
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
Network attack vector, but AC:H due to required allocation-failure timing condition and AT:P analog; impact is availability-only with no confidentiality or meaningful integrity consequence.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
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
Lifecycle Timeline
2DescriptionCVE.org
ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger this vulnerability by processing malicious PDB files to cause crashes or write a single zero byte to freed memory.
AnalysisAI
Use-after-free in ImageMagick's PDB decoder (all versions before 7.1.2-15) allows remote attackers supplying crafted Palm Database image files to crash the application or write a single null byte to freed heap memory. The flaw manifests specifically when memory allocation fails during PDB decoding, leaving a stale pointer that is subsequently dereferenced rather than nulled or re-validated. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerability is triggered exclusively when ImageMagick processes a file in PDB (Palm Database) format and a memory allocation failure occurs within that decoder's code path - two conditions that must coincide, consistent with the CVSS 4.0 AT:P (attack requirements present) metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:H/AT:P/PR:N/UI:N) scores 6.3, with impact confined entirely to vulnerable-system availability (VA:L) and no confidentiality or integrity impact across any system tier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker submits a specially crafted PDB image file to a web application or content pipeline that passes user-supplied files to ImageMagick for processing. The malicious file is constructed to induce a heap allocation failure within the PDB decoder, causing ImageMagick to dereference a stale pointer. … |
| Remediation | Upgrade ImageMagick to version 7.1.2-15 or later, which resolves the stale-pointer handling in the PDB decoder; this fix version is confirmed by the GitHub Security Advisory GHSA-3j4x-rwrx-xxj9 at https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-3j4x-rwrx-xxj9. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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