An issue was discovered on the ASUS RT-N56U Wireless Router with Firmware 3.0.0.4.374_979. When executing an "nmap -O" command that specifies an IP address of an affected device, one can crash the device's WAN connection, causing disconnection from the Internet, a Denial of Service (DoS). The attack is only possible from within the local area network.
Severity
CVSS 3.0
6.5 medium
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)