MEDIUMVulnerability
Global

Unpatched Microsoft Defender flaw lets hackers gain admin access

·Source: DataBreaches.net

Updated:

Executive Summary

Laura Pippig reports: A security vulnerability was recently discovered in Microsoft Defender, the first-party Windows 11 antivirus tool used by millions. Attackers can exploit this vulnerability to gain elevated system privileges and cause significant damage without users noticing. The so-called “RedSun” vulnerability was discovered by security researcher Chaotic Eclipse, the same one who previous

Analysis

Laura Pippig reports: A security vulnerability was recently discovered in Microsoft Defender, the first-party Windows 11 antivirus tool used by millions. Attackers can exploit this vulnerability to gain elevated system privileges and cause significant damage without users noticing. The so-called “RedSun” vulnerability was discovered by security researcher Chaotic Eclipse, the same one who previously published a... Source
Source Attribution

Originally published by DataBreaches.net on Apr 16, 2026.

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