26-021 (2026年5月16日)

* indicates a new version of an existing rule

Deep Packet Inspection Rules:

Mail Server Common
1012562 - Microsoft Word Remote Code Execution Vulnerability (CVE-2026-40364)


Server CLDAP
1012563 - Windows Netlogon Remote Code Execution Vulnerability (CVE-2026-41089)


Web Server HTTPS
1012564 - Microsoft Exchange Server Cross-Site Scripting Vulnerability (CVE-2026-42897)


Integrity Monitoring Rules:

There are no new or updated Integrity Monitoring Rules in this Security Update.


Log Inspection Rules:

There are no new or updated Log Inspection Rules in this Security Update.