Microsoft Defender | byteiota

Tag: Microsoft Defender

Cracked Windows security shield representing Microsoft Defender zero-day vulnerabilities BlueHammer, RedSun, and UnDefend

News

Microsoft Defender Zero-Days: What Developers Must Do Now

The tool running on 1.4 billion Windows machines to stop attackers became the attack surface. ...

June 2, 2026

Cracked shield icon representing Microsoft Defender zero-day vulnerabilities CVE-2026-41091 and CVE-2026-45498 with warning indicators

News

Microsoft Defender CVE-2026-41091: Patch Now or Lose SYSTEM

CVE-2026-41091 and CVE-2026-45498 actively exploited in the wild. Check your Defender engine version now — ...

May 22, 2026