CRITICALZero Day
Global

CVE-2026-69414 ShieldBreak Zero-Day: No Patch, and CISA BOD 26-04 Gives You 14 Days

·Source: Qualys Blog

Updated:

Executive Summary

Executive Summary ShieldBreak (CVE-2026-69414) is a zero-day elevation-of-privilege vulnerability in the Microsoft Malware Protection Engine used by Microsoft Defender, allowing a low-privilege local attacker to escalate to SYSTEM. A public PoC was released on August 12, 2026, and Microsoft assigned the CVE on August 14, and no patch is available yet. Qualys VMDR provides detection […]

Analysis

Executive Summary ShieldBreak (CVE-2026-69414) is a zero-day elevation-of-privilege vulnerability in the Microsoft Malware Protection Engine used by Microsoft Defender, allowing a low-privilege local attacker to escalate to SYSTEM. A public PoC was released on August 12, 2026, and Microsoft assigned the CVE on August 14, and no patch is available yet. Qualys VMDR provides detection […]

Indicators of Compromise (2)

CVE (2)
CVE-2026-69414
NVDMITRE CVE
CVE-2026-50656
NVDMITRE CVE
Source Attribution

Originally published by Qualys Blog on Aug 20, 2026.

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