Microsoft has released updates to fix issues caused by the August 2025 security patches, which introduced unwanted UAC prompts and app installation problems on Windows systems. These updates also address a privilege escalation vulnerability (CVE-2025-50173) and improve control over UAC prompts for administrators. #CVE-2025-50173 #WindowsInstaller
Keypoints
- Microsoft’s September 2025 security updates fix bugs caused by August patches affecting UAC prompts.
- The updates address a privilege escalation vulnerability (CVE-2025-50173) that impacts both client and server Windows platforms.
- New UAC prompts are now required only during MSI repair operations unless apps are added to an allowlist.
- Admins can disable UAC prompts for specific applications by modifying registry keys under HKEY_LOCAL_MACHINE.
- Another bug fixed by the update improves streaming performance for NDI software on Windows 10 and 11.