Windows 10 22h2
CVE-2026-20873
HIGH
Severity by source
AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Management Services (Windows 10/11) stems from improper synchronization of shared resources, allowing authenticated local users to gain elevated privileges through race condition exploitation. The vulnerability affects multiple Windows versions including 22H2 and 24H2 builds, with no patch currently available. An attacker with valid credentials can leverage this flaw to escalate from a standard user account to system-level access.
Technical ContextAI
Classified as CWE-362 (Race Condition). Affects the Windows Management component of Windows 10 1809. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-362 – Race Condition
View allSame technique Race Condition
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External POC / Exploit Code
Leaving vuln.today