Microsoft's August 2026 Patch Tuesday update addresses 398 newly discovered vulnerabilities, including a zero-day flaw that is currently being exploited and a wormable remote code execution (RCE) vulnerability in DNS. The update covers a wide range of components, such as Windows, Office, and Azure, with 62 vulnerabilities rated as Critical. The fact that one of the vulnerabilities is already being exploited in the wild highlights the urgency of applying the patch1. The sheer volume of vulnerabilities being addressed underscores the importance of regular patching and vulnerability management. The presence of a wormable RCE flaw is particularly concerning, as it could enable attackers to spread malware without user interaction. So what matters to practitioners is that the window for patching is already closing, making it essential to assess exposure and apply the update immediately.