TCP Port 7900 – mevent

About TCP Port 7900

The Internet Assigned Numbers Authority (IANA) registers port 7900 for mevent. The IANA description reads: ‘Multicast Event’. This port appears in 3 IDS rules and does not have notable malware activity indicators in our data.

IDS Rule References

3 IDS / security rules reference TCP port 7900. Treat that number as context, not a danger score. Many detection rules are written against groups of ports rather than one service, web ports especially, so common web alternate ports inherit large counts while genuinely sensitive services can show few rules or none. Presence in IDS rules does not mean traffic on this port is malicious.

Rule categories (top 2): misc-attack (2), attempted-user (1).

Sample rule descriptions for TCP port 7900:

• ET EXPLOIT Fortinet FortiSIEM Unauthenticated Command Injection CVE-2023-34992
• ET EXPLOIT Fortinet FortiSIEM Unauthenticated Command Injection CVE-2024-23108
• ET EXPLOIT Fortinet FortiSIEM Unauthenticated phMonitor Command Injection (CVE-2025-25256)

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry and Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range).