I scanned my Android phone connected to the WiFi router from within the LAN, using nmap. It returned the following result.
PORT STATE SERVICE
5353/udp open|filtered zeroconf
Does this mean if a hacker can somehow get into my router or LAN then they can exploit this port to get into my Android phone?
Nmap command used: sudo nmap -sSU -F 192.168.1.2
5353/udpport is used by MDNS. Many apps and the Android operating system itself uses this protocol for service and device discovery on local network. See more details in this answer. MDNS is not very much vulnerable to attacks. See this. Also "a hacker can somehow get into my router" is not very probable. – Irfan Latif Jul 09 '23 at 16:31