MicrosoftCVE-2026-69414
Microsoft Malware Protection Engine: privilege escalation
High7.8CVE-2026-69414 · Published Aug 14, 2026 · updated Sep 3, 2026
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ".
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft Malware Protection Engine Product | >= 1.1.0.0, < 1.1.26080.3 | 1.1.26080.3 |
Details and references
More Microsoft advisories
All Microsoft| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 14 | Microsoft PowerShell: command injection | High7.8 | 7.4.19.0+2 more |
| Aug 14 | Microsoft Edge (Chromium-based): heap buffer overflow | High8.3 | 151.0.4129.86 |
| Aug 12 | Fetch Web Page OS protocol handler remote code execution | High8.8 | 1.132.1 |
| Aug 12 | Agent network filter bypass via IPv4-mapped IPv6 literals | High8.2 | 1.132.1 |
| Aug 11 | Copilot Chat Security Feature Bypass Vulnerability | High7.1 | 1.132.1 |
| Aug 11 | Copilot Custom Agent Hook Remote Code Execution Vulnerability | High7.8 | 1.132.1 |