Defender for Endpoint and Antivirus
CVE-2026-69414: Microsoft Defender Elevation of Privilege Vulnerability
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ".
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 3.1 7.8
EPSS1.3%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Microsoft Malware Protection Engine 1.1 | 1.1.26080.3 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ".
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.