CVE-2026-45647
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Microsoft Defender for Endpoint Privilege Escalation via TOCTOU Race Condition

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-10
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-45647
EUVD
EUVD-2026-35571
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft defender_for_endpoint *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-367 The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
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Executive Summary

This vulnerability is a time-of-check time-of-use (toctou) race condition found in Microsoft Defender for Endpoint. It allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

The vulnerability can impact you by allowing an authorized attacker to gain higher privileges on your system than they should have. This elevation of privilege can lead to unauthorized actions or changes within the system.

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