Rule Update
26-016 (April 21, 2026)
Publish date: April 21, 2026
DESCRIPTION
* indicates a new version of an existing rule
Deep Packet Inspection Rules:
Kerberos KDC Server
1012552 - Identified Kerberos PKINIT AD CS Certificate Impersonation via Certipy
1012336* - Microsoft Windows Kerberos Security Feature Bypass Vulnerability (CVE-2025-29809)
Trend Micro Control Manager
1008760* - Control Manager SQL Injection Vulnerability (CVE-2017-11383)
1008589* - Control Manager cmdHandlerLicenseManager SQL Injection Vulnerability (CVE-2017-11384)
1008721* - Control Manager cmdHandlerStatusMonitor SQL Injection Vulnerability (CVE-2017-11385)
Web Server Common
1010697* - InterScan Messaging Security Virtual Appliance Widget Information Disclosure Vulnerability (CVE-2020-27019)
Web Server HTTPS
1008293* - Control Manager Download Multiple Directory Traversal Information Disclosure Vulnerabilities
1008857* - Control Manager Multiple SQL Injection Remote Code Execution Vulnerability (CVE-2018-3604)
1012461* - LibreNMS Stored Cross-Site Scripting Vulnerability (CVE-2025-55296)
Web Server Miscellaneous
1010627* - InterScan Web Security Virtual Appliance Buffer Overflow Vulnerability (CVE-2020-28578)
Web Server SharePoint
1012554 - Microsoft SharePoint Server Spoofing Vulnerability (CVE-2026-32201)
Windows SMB Server
1012219* - Deep Security Agent Command Injection Vulnerability (CVE-2024-51503)
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.
Deep Packet Inspection Rules:
Kerberos KDC Server
1012552 - Identified Kerberos PKINIT AD CS Certificate Impersonation via Certipy
1012336* - Microsoft Windows Kerberos Security Feature Bypass Vulnerability (CVE-2025-29809)
Trend Micro Control Manager
1008760* - Control Manager SQL Injection Vulnerability (CVE-2017-11383)
1008589* - Control Manager cmdHandlerLicenseManager SQL Injection Vulnerability (CVE-2017-11384)
1008721* - Control Manager cmdHandlerStatusMonitor SQL Injection Vulnerability (CVE-2017-11385)
Web Server Common
1010697* - InterScan Messaging Security Virtual Appliance Widget Information Disclosure Vulnerability (CVE-2020-27019)
Web Server HTTPS
1008293* - Control Manager Download Multiple Directory Traversal Information Disclosure Vulnerabilities
1008857* - Control Manager Multiple SQL Injection Remote Code Execution Vulnerability (CVE-2018-3604)
1012461* - LibreNMS Stored Cross-Site Scripting Vulnerability (CVE-2025-55296)
Web Server Miscellaneous
1010627* - InterScan Web Security Virtual Appliance Buffer Overflow Vulnerability (CVE-2020-28578)
Web Server SharePoint
1012554 - Microsoft SharePoint Server Spoofing Vulnerability (CVE-2026-32201)
Windows SMB Server
1012219* - Deep Security Agent Command Injection Vulnerability (CVE-2024-51503)
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.
Featured Stories
When AI Becomes a Zero-Day Machine: What Public Sector Organizations Need to KnowClaude Mythos Preview shows how AI can rapidly discover and weaponize zero-day vulnerabilities—transforming once human-scale threats into machine-speed attacks. As these capabilities spread, public sector organizations must rely on trusted, proactive defenders like TrendAI™ ZDI to stay ahead of an AI-driven threat landscape.Read more
Hunt Them All: An AI-Powered Vulnerability Sweep of 19,000 MCP ServersIn this research, we analyzed over 19,000 open-source MCP server repositories to uncover how much AI-generated code they contain and how many harbor exploitable vulnerabilities.Read more
Update on Exposed MCP Servers: The Threat Widens to the CloudExposed Model Context Protocol (MCP) servers have become powerful vectors for cloud attacks, enabling threat actors to not only access sensitive data but also take control of the cloud services themselves.Read more
Old Vulnerabilities, New AI Era, Amplified Risk: How Outdated Flaws Continue to Fuel the N-Day Exploit MarketEven as AI adoption accelerates, old exploits remain overlooked weaknesses. Underground trends show a renewed demand for exploits, with cybercriminals relying on aging but still effective vulnerabilities. We examine this blind spot and why long-standing issues need to be addressed.Read more