Description
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ".
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
E
Physical
RL
O
RC
Changed
Affected products
News coverage
- Researcher Drops New Microsoft Defender PoC Showing ShieldBreak Patch Can Be BypassedThe Hacker News · 12d ago
- Microsoft working on Defender patch for ShieldBreak zero-dayBleepingComputer · 8/17/2026
References
Updated 38m ago · 8 sources