EUVD-2026-73779
GHSA-54h9-3g63-9x38
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-delivered graphics payload, no authentication or special config required, user must open content; full RCE on success with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
AnalysisAI
Heap-based buffer overflow in the Microsoft Graphics Component enables remote code execution across a broad range of Windows client and server editions from Windows 10 1607 through Windows 11 26H1 and Windows Server 2012 through Server 2025. An unauthenticated network-based attacker can exploit this flaw by inducing a user to interact with maliciously crafted graphical content, triggering a CWE-122 heap overflow that yields full C:H/I:H/A:H impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | User interaction is required (UI:R per CVSS vector): a victim must open or preview a maliciously crafted graphics file, document embedding such content, or visit a webpage rendering it. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.8 with AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H reflects a realistic threat level: network-delivered with no authentication or special configuration required, but constrained by mandatory user interaction (UI:R), which limits fully automated worm-like spread. … 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 each affected Windows version via Windows Update, WSUS, or Microsoft Update Catalog, targeting the minimum fixed builds listed above (e.g., 10.0.26100.9445 for Windows 11 24H2, 10.0.19045.7725 for Windows 10 22H2). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, create a complete inventory of Windows 10, Windows 11, and Windows Server (2012-2025) systems, and identify user exposure vectors such as email, web browsing, and document collaboration tools that could deliver malicious graphics. …
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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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