Microsoft Deploys Massive August 2026 Patch Tuesday to Close 400 Flaws, Three Zero-Days

Microsoft’s August 2026 Patch Tuesday patches roughly 400 vulnerabilities across a broad Microsoft stack, including three zero-days. The fixes span Windows, Office, Azure, Exchange, SharePoint, SQL, PowerShell, and more, with many critical remote code execution and elevation-of-privilege flaws addressed. Organizations should apply the updates promptly to reduce exposure to exploitation.