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

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id: 2972
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insdate: 2026-09-09 10:10:21
title: Researcher Drops New Microsoft Defender PoC Showing ShieldBreak Patch Can Be Bypassed
additional: 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
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