Microsoft pushed out fixes for at least 398 security vulnerabilities across Windows and supported software, according to Krebs on Security. The update addresses a broad range of flaws, including one that is already being actively exploited in the wild.
The same release also covers two vulnerabilities that were publicly detailed prior to today. That prior disclosure raises the risk of wider exploitation, though the source does not specify which products are most affected or provide technical details beyond the patch announcement.
Since this brief is based on a single source, there are no conflicting reports to compare. The vulnerability counts and exploit statuses come solely from Krebs on Security's coverage of Microsoft's update.