Windows 10 22h2
CVE-2026-20919
HIGH
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Windows SMB Server contains a race condition in concurrent resource handling that enables authenticated network attackers to escalate privileges on affected systems including Windows 10 22H2, Windows 10 1607, and Windows Server 2025. The vulnerability requires low attack complexity and network access from an authenticated user, but carries high impact across confidentiality, integrity, and availability. No patch is currently available for this HIGH severity issue (CVSS 7.5).
Technical ContextAI
Classified as CWE-362 (Race Condition). Affects Windows 10 1607. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
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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