Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Lifecycle Timeline
2DescriptionCVE.org
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an unauthorized attacker to elevate privileges over a network.
AnalysisAI
Network-based privilege elevation in the Windows Runtime (WinRT) affects a broad range of Microsoft platforms including Windows 10 (1809 through 22H2), Windows 11 (24H2/25H2/26H1), and Windows Server 2019/2022/2025. An unauthorized attacker who wins a timing race in the improperly synchronized shared-resource handling can gain elevated privileges, with the vulnerability carrying an implicit authentication-bypass characteristic per vendor tags. …
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Recommended ActionAI
Within 24 hours, conduct an inventory of all Windows 10 (versions 1809-22H2), Windows 11 (versions 24H2/25H2/26H1), Windows Server 2019, 2022, and 2025 systems deployed across your infrastructure. …
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View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-43893
GHSA-p5cq-9q4c-rvv7