EUVD-2026-73527
GHSA-qmqx-pcv7-9pgg
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only UAF requiring low-privileged account and precise heap or race-condition manipulation; SYSTEM-level kernel compromise yields full C/I/A impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in the Windows Win32K kernel-mode GUI subsystem allows a low-privileged local user to gain SYSTEM-level access via a use-after-free memory corruption condition. The vulnerability affects a broad span of Windows 10, Windows 11, and Windows Server 2019/2022/2025 releases, making it highly relevant to enterprise endpoint and server environments. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an attacker to already possess local code execution on the target system under a standard low-privileged (non-administrative) Windows account, confirmed by AV:L/PR:L in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.0 with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H accurately characterizes this as a local-only, high-complexity privilege escalation - the AC:H constraint is significant and limits opportunistic exploitation. … 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 CVE-2026-69498 via Windows Update or the Microsoft Update Catalog, targeting the following minimum fixed builds: Windows 10 1809 and Server 2019 to 10.0.17763.9245; Windows 10 21H2 to 10.0.19044.7725; Windows 10 22H2 to 10.0.19045.7725; Windows 11 23H2 to 10.0.22631.7582; Windows 11 24H2 to 10.0.26100.9445; Windows Server 2025 to 10.0.26100.33438; Windows 11 25H2 to 10.0.26200.9445; Windows 11 26H1 to 10.0.28000.2954; Windows Server 2022 to 10.0.20348.5622. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows 10, 11, Server 2019, 2022, and 2025 systems in your production environment and prioritize domain controllers and mission-critical servers. …
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Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
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External POC / Exploit Code
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