Microsoft has released its November 2025 Patch Tuesday updates, addressing 63 security vulnerabilities across its products.
The update includes fixes for one actively exploited zero-day flaw and four vulnerabilities rated as critical. Two of these are remote code execution bugs, one involves elevation of privilege, and the other is an information disclosure issue.
The vulnerabilities span a range of categories, including 29 elevation of privilege flaws, 16 remote code execution issues, 11 information disclosure bugs, three denial of service vulnerabilities, two security feature bypasses, and two spoofing vulnerabilities. These updates apply to products such as Microsoft Office, Windows components, Azure services, and developer tools like Visual Studio and GitHub Copilot.
The most serious issue this month is an actively exploited zero-day flaw tracked as CVE-2025-62215, a Windows Kernel elevation of privilege vulnerability. Microsoft explained that the flaw involves a race condition that allows an attacker with local access to gain SYSTEM-level privileges. The company credited the Microsoft Threat Intelligence Center (MSTIC) and the Microsoft Security Response Center (MSRC) for discovering the issue, but did not disclose how attackers are exploiting it in the wild.
This month’s update also marks the first extended security update (ESU) for Windows 10, following the end of its official support. Users still running Windows 10 are strongly encouraged to upgrade to Windows 11 or enroll in the ESU program to continue receiving critical security patches. Microsoft also released an out-of-band update to fix a bug that was preventing some systems from enrolling in the program.
Beyond Microsoft, several other major vendors released security patches in November 2025. Adobe rolled out updates for InDesign, Photoshop, Illustrator, and other products. Cisco issued patches for multiple products, including ASA and Identity Services, and warned of active exploits targeting older flaws. Fortinet, Google, Ivanti, SAP, Samsung, QNAP, and others also released security fixes this month.
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With vulnerabilities ranging from remote code execution to privilege escalation, this month’s updates highlight the importance of staying current with patches. Users and organizations are advised to apply the latest updates immediately to reduce potential risks. Microsoft recommends reviewing the full list of CVEs in its official November 2025 Patch Tuesday documentation for detailed information on affected products and mitigation steps.
