EUVD-2026-73265
GHSA-3ww2-qgp7-jhww
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Network unauthenticated, but reliable double-free RCE needs heap grooming (AC:H) and typically victim rendering of crafted content (UI:R); full C/I/A on code execution.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Double free in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
AnalysisAI
Remote code execution in the Microsoft Graphics Component (GDI/graphics stack) affects the full supported Windows line - Windows 10 (1607-22H2), Windows 11 (23H2-26H1), and Windows Server 2012 through 2025 - where a double free (CWE-415) lets a remote attacker corrupt memory and run arbitrary code. Microsoft rates it CVSS 9.8 with a fully unauthenticated network vector and full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerable code path is the Windows Graphics Component's parsing of a crafted graphics/image object; exploitation requires that a Windows host receive and render such attacker-supplied content through a surface reachable per the network vector. … 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:N/S:U/C:H/I:H/A:H = 9.8) presents this as trivially exploitable, unauthenticated, no-interaction network RCE - the highest-urgency profile. … 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 | Patch available per vendor advisory - apply the Microsoft cumulative/security update that raises each affected SKU to or above its fixed build (for example Windows 11 24H2 to 10.0.26100.9445, Windows 10 22H2 to 10.0.19045.7725, Windows Server 2025 to 10.0.26100.33438, Server 2019/Windows 10 1809 to 10.0.17763.9245, Server 2022 to 10.0.20348.5622) as listed in MSRC (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77493). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an immediate inventory of all Windows 10 (versions 1607-22H2), Windows 11 (versions 23H2-26H1), and Windows Server (2012 R2 through 2025) systems; prioritize servers and externally-accessible endpoints for patching. …
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Same weakness CWE-415 – Double Free
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External POC / Exploit Code
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