Microsoft Rings in 2025 With Record Security Update

Microsoft's January 2025 Patch Tuesday fixes a record 159 vulnerabilities — including eight zero-days (three already exploited) and multiple critical RCE and privilege-escalation bugs across Windows, Hyper‑V, Office, .NET, Azure and related components. The report highlights immediate remediation for three actively exploited Hyper‑V NT kernel privilege escalations (CVE-2025-21333/21334/21335), several 9.8 CVSS RCEs (including OLE and NTLMv1 issues), and other high-priority flaws; it also notes that an AI-based platform (Unpatched.ai) helped discover several disclosed zero-days.