EUVD-2026-73914
GHSA-7h9p-pgw8-7vp4
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-delivered image triggers heap overflow on user interaction with no auth or config prerequisites; full RCE potential justifies C:H/I:H/A:H with no scope change.
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
Heap-based buffer overflow in Windows Imaging Component (WIC) enables remote code execution across a wide range of Microsoft Windows desktop and server editions. Exploitation requires a user to open or preview a maliciously crafted image file - consistent with the UI:R CVSS metric - which triggers CWE-122 heap corruption that can be leveraged for arbitrary code execution with full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a user to open, preview, or otherwise cause Windows Imaging Component to process a maliciously crafted image file, consistent with UI:R in the provided CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) correctly reflects a high-severity, low-complexity network vector constrained only by mandatory 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 vendor-released patches distributed through Windows Update and the Microsoft Update Catalog; patch availability is confirmed by Microsoft MSRC per the advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83992. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running Windows 10, 11, or Windows Server 2012-2025 to identify affected devices and prioritize patching for business-critical systems and user-facing workstations. …
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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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