Severity by source
AV:L/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 Backup Engine allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows Backup Engine affects Windows 10 (21H2, 22H2) and Windows 11 (24H2, 25H2, 26H1), where a race condition (CWE-362) lets an already-authenticated low-privileged user win a timing window to elevate to higher privileges. The CVSS 3.1 base score is 7.0 (AV:L/AC:H/PR:L), reflecting local access and high attack complexity but full confidentiality, integrity, and availability impact. No public exploit identified at time of analysis and the CVE is not listed in CISA KEV; a vendor patch is available from Microsoft.
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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
EUVD-2026-45061
GHSA-v83q-c28h-3q53