23.81.35.51 — 3 open ports, 37 known CVEs, network Leaseweb UK Limited

Known CVEs on this host

3open ports

0names pointing here

37known CVEs

0known exploited

Open ports and CVEs as of our latest check of this host, 2026-05-17.

CVEs by severity: CRITICAL 2 HIGH 9 MEDIUM 14 LOW 12

A match is an indication, not proof: it is based on the software version a service reported, and fixes are often backported without changing the version. See the list

Not counted: 1 only affects a particular platform; this host's is not known (openssh 8.4p1). See them

Earlier software versions of this host and the CVEs they had are kept as its history. See the history

Network: Leaseweb UK Limited AS205544
Open ports: 22, 80, 443 · at our latest check, 2026-05-17
Location: United Kingdom GB
Route: 23.81.32.0/21 · announced by Leaseweb UK Limited AS205544 RPKI valid
Organisation: Leaseweb UK Ltd · Content / hosting
Registry network: UK-LEASEWEB-20130506 · 23.81.32.0 - 23.81.39.255 · Leaseweb UK Limited · RIPE
Abuse contact: [email protected] · for UK-LEASEWEB-20130506
First seen: 2026-05-17 22:17 UTC
Last seen alive: 2026-05-17 22:18 UTC
Hosted domains: No host name points here

Reputation

Not a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.

Services (3)

22/tcp SSH OpenSSH_8.4p1 37 CVEs first 2026-05-17 · last 2026-05-17

Server: SSH-2.0-OpenSSH_8.4p1
Host key: ssh-ed25519 6bf6fdc9284e269a…

Raw response

SSH-2.0-OpenSSH_8.4p1

80/tcp HTTP nginx first 2026-05-17 · last 2026-05-17

Status: 302 Found
Server: nginx

Raw response

HTTP/1.1 302 Found
Server: nginx
Date: Sun, 17 May 2026 22:17:42 GMT
Content-Type: text/html; charset=UTF-8
Content-Length: 0
Connection: keep-alive
Location: http://nasty-julia.com/

443/tcp TLS first 2026-05-17 · last 2026-05-17

TLS: TLSv1.2
Certificate for: lw187809.amhost.net
Issued by: lw187809.amhost.net
Valid: 2026-05-04 → 2027-05-04
Note: self-signed certificate

Raw response

HTTP/1.1 400 Bad Request
Server: nginx
Date: Sun, 17 May 2026 22:17:42 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 650
Connection: close

<html>
<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<center>The plain HTTP request was sent to HTTPS port</center>
<hr><center>nginx</center>
</body>
</html>
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Vulnerabilities

Only affects certain platforms (1)

These CVEs only apply when the software runs on a particular platform (for example Windows), and this host's platform is not known. They are not counted. 1 of them is known to be exploited.

CVEs by severity: HIGH 1

CVE	Software
CVE-2026-123158 HIGH 8.1 known exploited	openssh 8.4p1 · port 22

CVE history

Software versions this host showed earlier, when we saw each, why it no longer applies, and the CVEs matched on it then. None of them is counted.

Port history

Every port that has answered a connection on this address, and when. A port is listed as open above only when a service was identified on it. Times are UTC.

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