CVE-2026-71347

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Race Condition in Windows Security Center Allows Privilege Escalation

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-71347

EUVD

EUVD-2026-99573

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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 is a race condition vulnerability in Windows Security Center where improper synchronization during concurrent execution allows an authorized attacker to elevate their privileges locally.

Detection Guidance

Detecting this race condition vulnerability requires monitoring for unusual privilege escalation patterns in Windows Security Center. Check Windows Event Logs for Event ID 4688 (new process creation) and Event ID 4672 (special privileges assigned). Use PowerShell commands like Get-WinEvent -LogName Security | Where-Object {$_.Id -eq 4688 -or $_.Id -eq 4672} to filter relevant events. Monitor for multiple rapid privilege changes in short timeframes.

Impact Analysis

An attacker with local access could exploit this to gain higher privileges on your system, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights.

Compliance Impact

This vulnerability allows local privilege escalation due to a race condition in Windows Security Center. Such unauthorized privilege elevation could lead to unauthorized access to sensitive data, which may violate compliance requirements under GDPR (data protection) and HIPAA (health information privacy) if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the race condition in Windows Security Center. Monitor Microsoft's security advisories for patches and install them promptly.

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