ShieldCrash PoC: Microsoft Defender Fix Bypass
A ShieldCrash proof-of-concept bypasses Microsoft's patch for CVE-2026-69414, a high-severity elevation-of-privilege flaw in the Microsoft Malware Protection Engine.
Microsoft previously fixed CVE-2026-69414 (ShieldBreak), a high-severity elevation-of-privilege vulnerability in the Microsoft Malware Protection Engine used by Microsoft Defender. SOCRadar now reports a new proof-of-concept dubbed ShieldCrash demonstrating that the published fix can be bypassed. The available source text does not detail affected versions or whether the bypass has been used in real attacks.
- CVE-2026-69414 (ShieldBreak) is a high-severity elevation-of-privilege bug in the Microsoft Malware Protection Engine.
- A new ShieldCrash PoC shows the released fix can be bypassed, according to SOCRadar.
- Exploitation status and affected versions are not detailed in the available text.
- CVEs
- CVE-2026-69414
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-69414 | Local Elevation of Privilege in Microsoft Defender Malware Protection Engine | 7.8 | 1% | PoC |
From the original article

ShieldCrash PoC: Microsoft Defender Fix Bypass Microsoft recently fixed CVE-2026-69414 (ShieldBreak) , a High-severity elevation-of-privilege vulnerability in the Microsoft Malware Protection Engine. Now, Nightmare Eclip
By ameer · socradar.io
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