Microsoft Warns of Two Actively Exploited Defender Vulnerabilities
Ravie LakshmananMay 21, 2026Endpoint Security / Vulnerability Microsoft has disclosed that a privilege escalation and a denial-of-service flaw in Defender...
Vulnerability Microsoft
On-Prem Microsoft Exchange Server CVE-2026-42897 Exploited via Crafted Email
Ravie LakshmananMay 15, 2026Microsoft / Vulnerability Microsoft has disclosed a new security vulnerability impacting on-premise versions of Exchange Server that...
Microsoft Office Zero-Day (CVE-2026-21509) – Emergency Patch Issued for Active Exploitation
Ravie LakshmananJan 27, 2026Zero-Day / Vulnerability Microsoft on Monday issued out-of-band security patches for a high-severity Microsoft Office zero-day vulnerability...
