← Port Encyclopedia
1433
MSSQL
TCP
Database
Critical Risk
Microsoft SQL Server — database access, SQL injection, xp_cmdshell RCE
🔍 How to Scan Port 1433
nmap -sV -p 1433 target
nmap -sV -sC --script=banner -p 1433 target
nc -zv target 1433
🛡️ Security Considerations
- Scan port 1433 with
nmap -sVto identify the exact service and version - If MSSQL is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit mssqlto find known exploits - Monitor traffic on port 1433 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation