EUVD-2026-73610
GHSA-3494-rw34-2p3q
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Race condition requires a local authenticated user (AV:L/PR:L) and kernel thread timing precision (AC:H); impact is an integrity-only security feature bypass with no confidentiality or availability effect.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to bypass a security feature locally.
AnalysisAI
Security feature bypass in Windows Win32K allows a locally authenticated, low-privileged attacker to exploit a kernel-level race condition and circumvent an OS-enforced integrity control, yielding high integrity impact without any confidentiality or availability effect. The flaw spans virtually every supported Windows SKU from Windows 10 1607 through Windows 11 25H2/26H1 and Windows Server 2016 through 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a locally authenticated session with at least standard (low-privilege) user credentials on an affected Windows build - unauthenticated remote exploitation is entirely precluded by the AV:L vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.7 score reflects real-world risk fairly accurately: AV:L hard-constrains exploitation to a locally authenticated user, and AC:H correctly acknowledges the precise kernel-thread timing window a race condition requires. … 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-released patch via Windows Update, WSUS, or Microsoft Update Catalog targeting the minimum fixed build for each SKU: Windows 11 24H2/25H2 to 10.0.26100.9445 or later, Windows 11 23H2 to 10.0.22631.7582 or later, Windows Server 2025 to 10.0.26100.33438 or later, Windows Server 2022 to 10.0.20348.5622 or later, Windows Server 2016/Windows 10 1607 to 10.0.14393.9512 or later, and Windows 10 21H2/22H2 to 10.0.19044.7725 or 10.0.19045.7725 or later respectively. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-362 – Race Condition
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today