Description
Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ".
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft Malware Protection Engine | 1.1.0.0 – < 1.1.26080.3 | 1.1.26080.3 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
-
1neptune/ShieldBreak ★ 1 · Aug 18, 2026
Windows Defender 0day vulnerability CVE-2026-69414 ShieldBreak
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maxprog-svg/CVE-2026-69414 ★ 0 · Oct 10, 2026
**CVE-2026-69414** is an elevation of privilege vulnerability in the **Microsoft Malware Protection Engine** (part of Windows Defender / Microsoft Defender Antivirus), publicly referred to as **"Rogu…
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- MSRC-CVE-2026-69414 Microsoft Defender Elevation of Privilege Vulnerability Microsoft Security Response Center · Sep 3, 2026
- WID-SEC-2026-2856 Microsoft Malware Protection Engine und Defender: Schwachstelle ermöglicht Erlangen von Administratorrechten BSI CERT-Bund (WID) · Aug 16, 2026
References
- Microsoft Defender Elevation of Privilege Vulnerability vendor-advisory patch