Windows 10 1607
CVE-2026-20934
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
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
Privilege escalation in Windows SMB Server (Server 2025, Windows 11 24H2, Windows 10 22H2) stems from improper synchronization of shared resources during concurrent execution, enabling authenticated network attackers to gain elevated privileges. The vulnerability requires high complexity exploitation but carries high impact across confidentiality, integrity, and availability. No patch is currently available.
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 Information Disclosure
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External POC / Exploit Code
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