BaseFortify

Publication date: 2025-12-09

Last updated on: 2025-12-10

Assigner: Microsoft Corporation

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Shell allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-12-09

Last Modified

2025-12-10

Generated

2026-07-06

AI Q&A

2025-12-09

EPSS Evaluated

2026-07-05

NVD

CVE-2025-64661

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_shell	3.1
microsoft	windows_10_1607	to 10.0.14393.8688 (inc)
microsoft	windows_10_1809	to 10.0.17763.8146 (inc)
microsoft	windows_10_21h2	to 10.0.19044.6691 (inc)
microsoft	windows_10_22h2	to 10.0.19045.6691 (inc)
microsoft	windows_11_23h2	to 10.0.22631.6345 (inc)
microsoft	windows_server_2016	to 10.0.14393.8688 (inc)
microsoft	windows_server_2019	to 10.0.17763.8146 (inc)
microsoft	windows_server_2022_23h2	to 10.0.25398.2025 (inc)
microsoft	windows_11_24h2	to 10.0.26100.7392 (inc)
microsoft	windows_11_25h2	to 10.0.26200.7392 (inc)
microsoft	windows_server_2025	to 10.0.26100.7392 (inc)

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

Executive Summary

This vulnerability is a race condition in the Windows Shell 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.

Impact Analysis

An attacker who already has some level of access to the system can exploit this vulnerability to gain higher privileges, potentially allowing them to execute unauthorized actions, access sensitive data, or compromise system integrity.

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