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Port 8181 Details


known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
8181 tcp trojans W32.Erkez.D@mm [Symantec-2004-121413-4703-99] (2004.12.14) - mass mailing worm that can terminate processes, lower security settings, and allow remote access to the compromised computer. Opens a backdoor and listens for remote commands on port 8181/tcp.

Backdoor.Shangxing [Symantec-2007-030516-4150-99] (2007.03.06) also uses this port.

The Web Administrator service (STEMWADM.EXE) in Websense Personal Email Manager 7.1 before Hotfix 4 and Email Security 7.1 before Hotfix 4 allows remote attackers to cause a denial of service (crash) by sending a HTTP GET request to TCP port 8181 and closing the socket before the service can send a response.
References: [CVE-2009-3749], [BID-36740]

IPSwitch IMail is an e-mail server which provides WWW (HTTP) E-mail services. By default this web service resides on port 8181 (TCP/UDP) or 8383 (TCP/UDP). Sending an HTTP request with an extremely long "HOST" field multiple times can cause the system hosting the service to become unresponsive. Each long request "kills" a thread without freeing up the memory used by it. By repeating this request, the system's resources can be used up completely.
References: [BID-2011]

TerraMaster F2-210 devices through 2021-04-03 use UPnP to make the admin web server accessible over the Internet on TCP port 8181, which is arguably inconsistent with the "It is only available on the local network" documentation. NOTE: manually editing /etc/upnp.json provides a partial but undocumented workaround.
References: [CVE-2021-30127]

Intermapper network management system (IANA official)
SG
8181 tcp Zafi.D Zafi.D Backdoor SANS
8181 tcp Erkez.D Erkez.D Backdoor (same as Zafi.D) SANS
8181 tcp pix-devmng Cisco PIX Device Manager SANS
8181 tcp biblioTECH BiblioTECH Library System SANS
8181 tcp,udp threat W32.Erkez Bekkoame
8181 tcp intermapper Intermapper network management system, registered 2011-05-09 IANA
8181 udp Reserved IANA
8150-8350 tcp,udp applications Y-cam Wireless IP Camera Portforward
9 records found

Related ports: 8383  

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