Microsoft Releases Over 1,200 Security Updates

On November 11, 2026, Microsoft released a comprehensive update that addresses 1,259 security vulnerabilities across its software portfolio. This marks the second consecutive month in which the number of patched vulnerabilities has exceeded the 1,000 mark. The updates affect a wide range of products, including Windows, Office, SQL Server, and SharePoint Server. Of the 1,259 vulnerabilities, 726 pertain to Windows, 174 to Office, 61 to Developer Tools, 59 to SQL Server, 53 to additional Developer Tools, and 27 to SharePoint Server.

The security updates also include 165 CVE IDs that were not issued by Microsoft. One of the critical vulnerabilities affects Outlook, potentially exposing NTLMv2 hashes. This vulnerability could allow attackers to gain unauthorized access to sensitive information. Microsoft has urged users to install the updates promptly to protect their systems. The vulnerabilities in Windows include both locally and remotely exploitable flaws.

Some of these vulnerabilities could enable attackers to take control of affected systems or steal data. Microsoft has emphasized that installing the patches is crucial for maintaining system integrity. The release of the updates is part of Microsoft's monthly patch cycle, aimed at closing security gaps in a timely manner. The high number of patched vulnerabilities in recent months reflects the increasing threats faced by businesses and individual users. IT security experts recommend regularly installing updates not only for Microsoft products but also for all software solutions in use.

Neglecting security updates can lead to significant risks, especially at a time when cyberattacks are becoming increasingly sophisticated. Microsoft has previously stressed that user security is a top priority. The continuous improvement of security architecture and rapid response to discovered vulnerabilities are part of the company's strategy. The current patches represent another step in this direction. The vulnerabilities patched this month affect not only end users but also businesses that rely on Microsoft technologies.

According to Microsoft, many of the patched vulnerabilities have already been actively exploited, underscoring the urgency of the updates. The next scheduled release of security updates by Microsoft is set for December 13, 2026. Users should ensure that their systems are up to date before this date to prevent potential attacks.