{"id":329309,"date":"2025-01-15T15:15:48","date_gmt":"2025-01-15T20:15:48","guid":{"rendered":"https:\/\/msftnewsnow.com\/?p=329309"},"modified":"2025-06-19T06:23:44","modified_gmt":"2025-06-19T13:23:44","slug":"microsoft-issues-largest-security-update-in-years","status":"publish","type":"post","link":"https:\/\/msftnewsnow.com\/microsoft-issues-largest-security-update-in-years\/","title":{"rendered":"Microsoft issues largest security update in years for Patch Tuesday January 2025, patches 3 critical zero-day vulnerabilities"},"content":{"rendered":"

Microsoft<\/a> has released its first Patch Tuesday update of 2025, addressing a staggering 161 security vulnerabilities – the largest number of fixes in a single month since 2017. As reported by Bleeping Computer<\/em><\/a>, the massive update includes security patches for three actively exploited zero-day flaws and multiple critical vulnerabilities that put Windows users at risk.<\/p>\n

January 2025 security update Patch Tuesday: 3 critical zero-day exploits<\/strong><\/h2>\n

\"Microsoft<\/p>\n

The most pressing concerns are three actively exploited vulnerabilities in Windows Hyper-V (CVE-2025-21333<\/a>, CVE-2025-21334<\/a>, and CVE-2025-21335<\/a>), all rated with a severity score of 7.8. These flaws allow attackers to gain SYSTEM-level privileges on affected systems, potentially enabling them to disable security tools or extract credentials to move across enterprise networks.<\/p>\n

Scope of vulnerabilities<\/strong><\/h2>\n

The January 2025 update addresses<\/a>:<\/p>\n