Microsoft patched two actively exploited Defender zero-days affecting Windows systems and security components.

Microsoft this week released patches for two vulnerabilities in Defender, warning they have been exploited in the wild as ...

Microsoft pushed out-of-band patches on May 21, 2026, for two actively exploited Windows Defender zero-days — one that lets a ...

On Wednesday, Microsoft started rolling out security patches for two Defender vulnerabilities that have been exploited in ...

Microsoft has released the latest Windows Defender definition update to strengthen protection against spyware and other unwanted software. It is also rolling out Windows update changes that let users ...

Microsoft has disclosed that a privilege escalation and a denial-of-service flaw in Defender has come under active ...

While there weren’t any genuine zero-day vulnerabilities to patch in May’s Patch Tuesday update, the fallout since then has ...