EUVD-2026-73601
GHSA-vmf6-2ccg-599p
Severity by source
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Network vector reflects content-delivery trigger through rendering pipelines; AC:H reflects heap-grooming prerequisite; PR:L and UI:R reflect authenticated-user and victim-interaction requirements; S:U consistent with in-system privilege escalation per Microsoft convention.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Win32K allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege escalation via use-after-free in the Windows Win32K kernel graphics subsystem affects every supported Windows 10/11 release and Windows Server 2012 through 2025, allowing a low-privileged authenticated attacker who can induce user interaction with crafted content to achieve full kernel-level compromise (C:H/I:H/A:H). The network attack vector reflects delivery through browser rendering or document processing pipelines that invoke Win32K GDI syscalls, rather than direct remote exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | An existing authenticated low-privileged user session on the target Windows system is required (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.1 base score with vector AV:N/AC:H/PR:L/UI:R/S:U reflects a constrained but serious exploitation profile: high attack complexity (heap-shaping or race conditions typical of UAF), required user interaction (victim must open or render attacker-controlled content), and an existing low-privileged session on the target system. … 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 the specific Windows build as documented in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69706; vendor patch is confirmed available. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, Windows 11, and Windows Server 2012-2025 systems in your environment and prioritize user-facing workstations and critical servers for immediate patching. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
Leaving vuln.today