EUVD-2026-73776
GHSA-54jc-xjpc-pg52
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network delivery via image file, no auth required, passive user interaction (thumbnail render), full code execution impact; S:U as heap overflow stays within the victim process.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
AnalysisAI
Remote code execution is possible in Windows Imaging Component (WIC) across a broad range of Microsoft Windows desktop and server releases via a heap-based buffer overflow triggered when a user opens or previews a specially crafted image file. The flaw is reachable over the network with no privileges required, making phishing or drive-by delivery viable attack vectors. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | User interaction is required: the vulnerable WIC code path is triggered when Windows processes a crafted image file, which occurs during thumbnail rendering by Windows Explorer, image preview in Office or browsers, or explicit file open operations. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:R scores 8.8, reflecting low complexity network exploitation with no privilege requirement and full C/I/A impact, offset only by the need for user interaction. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft security update for your specific Windows version via Windows Update, Windows Server Update Services (WSUS), or Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows desktop and server systems in your environment and implement controls to block image file preview/opening from untrusted sources such as email attachments and web downloads; alert users to avoid opening images from unknown senders. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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