Port 1858PrivateArk

PrivateArk traffic uses TCP and UDP port 1858.

transport: tcp · udp
in transit: encrypted
assignment: official
risk: 8/10
lookups: 0

Technical Details

what runs on :1858

PrivateArk uses a proprietary client/server protocol on TCP port 1858 for communication with the CyberArk Digital Vault. The protocol is authenticated and encrypted in normal deployments and is not an HTTP service; clients establish a session with the Vault rather than exchanging line-oriented or browser-readable requests. UDP is included in the IANA assignment, but standard CyberArk Vault deployments primarily use TCP 1858. Web-based CyberArk access normally involves related components such as the Password Vault Web Access service on HTTPS port 443, while 1858 is the direct Vault communication port.

Security Information

exposure of :1858

risk score

8/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

in transit

encrypted

payloads are protected on the wire

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Do not expose this port directly to the Internet: it provides access to a highly sensitive password vault and presents a high-value proprietary service for probing, authentication attacks, and exploitation of implementation or configuration weaknesses. Restrict it to the required CyberArk components with firewall rules and network segmentation; encryption does not make public exposure appropriate.

Record

iana registry entry

port: :1858
service: PrivateArk
transport: TCPUDP
encryption: tls / encrypted
assignment: iana registered
risk: 8/10risk
category: uncategorised
usage: CyberArk PrivateArk Vault servers listen on TCP port 1858 for connections from PrivateArk clients and related Vault components. Engineers typically encounter it on internal CyberArk Digital Vault networks, not on public-facing systems.
lookups: 0rank 993
added: 2026-09-11
updated: 2026-09-22
references: IANA service name registry — port 1858

Something wrong?

This record is maintained by the engineers who use port 1858. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-09-22.

01edit any field on a page of its own
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edit this record →back to the registry

Related Ports

browse categories →

ports registered around :1858, by lookups.

port	service	proto	category	risk	views
:1920	IBM Tivoli Monitoring	TCPtls	Web Services	caution	21.5k
:1863	Microsoft Notification Protocol	TCP	Voice and Chat	caution	15.9k
:1900	SSDP / UPnP Discovery	UDP	Network Services	caution	14.6k
:1883	MQTT Broker	TCP	Network Services	caution	14.2k
:1812	RADIUS Auth Protocol	TCPUDP	Security	caution	12.0k
:1886	Leonardo over IP	TCP	File Transfer	caution	10.4k
:1801	MSMQ	TCPUDP	Network Services	caution	8.9k
:1813	RADIUS Accounting	TCPUDP	Security	caution	7.2k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :1858PrivateArk

Technical Details

Security Information

Related Ports

Port 1858PrivateArk