Microsoft ships its largest-ever Patch Tuesday: 198 fixes, three zero-days
Microsoft just released the largest Patch Tuesday in its history, fixing 198 vulnerabilities in a single day. Three were public before a fix existed, and one Microsoft $MSFT Defender bug is already being exploited and is on the U.S. government's known-exploited list. Anyone runni
Microsoft's June 2026 Patch Tuesday is the largest in the program's history, fixing 198 vulnerabilities and beating the previous record of 167. 32 are rated critical. Three zero-days were public before patches were ready, and a Microsoft $MSFT Defender flaw is already exploited in the wild and listed in CISA's Known Exploited Vulnerabilities catalog. A Remote Desktop client bug can run code on your machine if you connect to a malicious server. Install the June updates as soon as possible. Sources: Tenable, Microsoft MSRC, CISA.