CVE-2026-20866
Unknown
Unknown - Not Provided
Race Condition in Windows Management Services Enables Local Privilege Escalation
Publication date: 2026-01-13
Last updated on: 2026-01-13
Assigner: Microsoft Corporation
Description
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | windows_management_services | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-362 | The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a race condition in Windows Management Services where concurrent execution using a shared resource occurs without proper synchronization. This flaw allows an authorized local attacker to elevate their privileges on the system. [1]
How can this vulnerability impact me? :
An attacker who already has some level of access to the system can exploit this vulnerability to gain higher privileges, potentially allowing them to perform actions that are normally restricted, such as modifying system settings or accessing sensitive data. [1]
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