NewsThe Hacker News09.09.2026SME Public sector

Researcher Drops New Microsoft Defender PoC Showing ShieldBreak Patch Can Be Bypassed

The security researcher known as Chaotic Eclipse has dropped a proof-of-concept (PoC) for yet another zero-day in Microsoft Defender. The vulnerability, codenamed ShieldCrash, is assessed to be a patch bypass for CVE-2026-69414 (CVSS score: 7.8), also called ShieldBreak, which the researcher reported last month. "Microsoft has failed to properly patch ShieldBreak CVE-2026-69414," Chaotic

CVE-2026-69414microsoft malware_protection_engine: unzureichende Zugriffskontrolle
CVE-2026-69414Microsoft Defender Elevation of Privilege Vulnerability
CVE-2026-69414microsoft malware_protection_engine: unzureichende Zugriffskontrolle
CVE-2026-69414Microsoft Malware Protection Engine und Defender: Schwachstelle ermöglicht Erlangen von Administratorrechten

Affected vendors and products

Microsoft Microsoft Malware Protection Engine
Microsoft Microsoft Malware Protection Engine

Other news entries

Microsoft working on Defender patch for ShieldBreak zero-dayNewsBleepingComputer17.08.2026
Nightmare Eclipse Drops Windows Zero-Day Exploit ‘ShieldBreak’NewsSecurityWeek13.08.2026
New Microsoft Defender 'ShieldBreak' zero-day grants SYSTEM privilegesNewsBleepingComputer12.08.2026
ShieldBreak Zero-Day PoC Claims Microsoft Defender Patch Bypass With SYSTEM AccessNewsThe Hacker News12.08.2026
"High-Quality-Update" kommt: Microsoft reagiert auf Defender-Exploit ShieldbreakNewsGolem.de — Security
Lücke im Defender: Neuer Zero-Day-Exploit für Windows auf Github geleaktNewsGolem.de — Security
Shieldcrash: Forscher ärgert Microsoft mit neuem Defender-ExploitNewsGolem.de — Security

Source: https://thehackernews.com/2026/09/researcher-drops-new-microsoft-defender.html

Linked advisories

Affected vendors and products

More on ShieldBreak

Other news entries