Port TCP:0 High Medium Low Network Vulnerabilities Malware Port TCP:0 SummaryTCP port 0 is open on the remote host. This is highly suspicious as this TCP port is reserved and should not be used. This might be a backdoor (REx). SolutionCheck your system Severity Classification CVSS Base Score: 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P Related Vulnerabilities Bugbear wormBofra Virus DetectionWollf backdoor detectionDefault web account on ZyxelApache mod_rootme Backdoor