Microsoft released patches for CVE-2026-21509, a new Office zero-day vulnerability that can be exploited to bypass security features.

Microsoft is warning Windows users that they're vulnerable to a new zero-day flaw that attackers have been exploiting to remotely execute arbitrary code. "At this time, we are aware of limited, ...

Microsoft has released emergency security updates to patch a high-severity Office zero-day vulnerability exploited in attacks ...

Apple has released emergency security updates to fix two zero-day vulnerabilities that attackers actively exploited in highly targeted attacks. The company described the activity as an "extremely ...

SonicWall Wednesday disclosed a zero-day vulnerability impacting its SMA1000 access platform that is under active exploitation via chained attacks. CVE-2025-40602 is a medium-severity local privilege ...

An advanced threat actor tracked as UAT-8837 and believed to be linked to China has been focusing on critical infrastructure ...

The company described the activity as an “extremely sophisticated attack” aimed at specific individuals. Although Apple did not identify the attackers or victims, the limited scope strongly suggests ...