Patch Tuesday For its September Patch Tuesday, Microsoft churned out fixes for 66 vulnerabilities alongside 20 Chromium security bugs in Microsoft Edge.

Affected products include: Azure, Edge (Android, Chromium, and iOS), Office, SharePoint Server, Windows, Windows DNS, and the Windows Subsystem for Linux.

Of these CVEs, three are rated critical, one is rated moderate, and the remainder are considered important.

One of the already publicly disclosed CVEs resolves a critical zero-day vulnerability (CVE-2021-40444) in MSHTML, also known as Microsoft’s legacy Trident rendering engine. The flaw can be abused to achieve arbitrary code execution using a malicious ActiveX control within a Microsoft Office document that hosts the browser rendering engine. This is the vulnerability we learned of on September 7 and was used in targeted attacks on Office users. Code to exploit the hole has…

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