Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.
What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Is more information available about Windows Security App?
Yes, please see Stay Protected With the Windows Security App for more information.
From the Start menu, type Windows Security and hit Enter. The Windows Security App will be displayed. Click on the Settings control and then click the About link. The current version will be displayed. See that your version is greater than or equal to 1000.27840.0.0.
Security updates
1000.27840.1000.0 — https://support.microsoft.com/en-us/windows/stay-protected-with-the-windows-security-app-2ae0363d-0ada-c064-8b56-6a39afb6a963
Vulnerabilities 1
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High 7.0
Windows Security App Elevation of Privilege Vulnerability
Use after free in Windows Security App allows an authorized attacker to elevate privileges locally.
Revision history
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#1
Information published.
References
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CVE-2026-105725 Windows Security App Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105725
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss