Host

81.91.92.27

As of our latest check on 2026-05-24, 81.91.92.27 (Web4U s.r.o., AS39790, Czechia) had 2 open ports (22, 80) and 29 known CVEs.

Known CVEs on this host

2open ports
2names pointing here
29known CVEs
0known exploited

Open ports and CVEs as of our latest check of this host, 2026-05-24.

CVEs by severity: HIGH 8 MEDIUM 12 LOW 9

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: 7 fixed by the distribution (openssh 9.2p1). See them

Network
Web4U s.r.o. AS39790
Open ports
22, 80 · at our latest check, 2026-05-24
Location
Czechia CZ
Hostname
vs1299.server4u.cz · reverse DNS, checked 2026-10-04
Route
81.91.88.0/21 · announced by Web4U s.r.o. AS39790 RPKI valid
Organisation
Web4U s.r.o. · Content / hosting
Registry network
WEB4U-NET-CUST-92 · 81.91.92.0 - 81.91.92.255 · RIPE
Abuse contact
[email protected] · for WEB4U-NET-CUST-92
First seen
2026-05-24 02:32 UTC
Last seen alive
2026-05-24 02:32 UTC
Hosted domains
2 names point here

Reputation

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

Services (2)

22/tcp SSH OpenSSH_9.2p1 29 CVEs first 2026-05-24 · last 2026-05-24
Server
SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u2
Host key
ssh-ed25519 5d6dad4561d1b1aa…
Raw response
SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u2
80/tcp HTTP Microsoft-IIS/10.0 first 2026-05-24 · last 2026-05-24
Status
200 OK
Title
IIS Windows Server
Server
Microsoft-IIS/10.0
Powered by
ASP.NET
Raw response
HTTP/1.1 200 OK
Content-Type: text/html
Last-Modified: Mon, 11 Dec 2023 09:46:29 GMT
Accept-Ranges: bytes
ETag: "23371ea162cda1:0"
Server: Microsoft-IIS/10.0
X-Powered-By: ASP.NET
Date: Sun, 24 May 2026 02:32:12 GMT
Content-Length: 703

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>IIS Windows Server</title>
<style type="text/css">
<!--
body {
	color:#000000;
	background-color:#0072C6;
	margin:0;
}

#container {
	margin-left:auto;
	margin-right:auto;
	text-align:center;
	}

a img {
	border:none;
}

-->
</style>
</head>
<body>
<div id="container">
<a href="http://go.microsoft.com/fwlink/?linkid=66138&amp;clcid=0x409"><img src="iisstart.png" alt="IIS" width="960" height="600" /></a>
</div>
</body>
</html>

Vulnerabilities

Fixed by the distribution (7)

The distribution's security data says the package revision this service shows already has the fix for these CVEs, or that its build is not affected. They are not counted.

CVEs by severity: CRITICAL 2 MEDIUM 3 LOW 2

CVESoftware
CVE-2023-28531 CRITICAL 9.8 openssh 9.2p1 · port 22
CVE-2023-38408 CRITICAL 9.8 openssh 9.2p1 · port 22
CVE-2023-51385 MEDIUM 6.5 openssh 9.2p1 · port 22
CVE-2023-48795 MEDIUM 5.9 openssh 9.2p1 · port 22
CVE-2023-51384 MEDIUM 5.5 openssh 9.2p1 · port 22
CVE-2026-106588 LOW 3.1 openssh 9.2p1 · port 22
CVE-2026-106589 LOW 2.9 openssh 9.2p1 · port 22

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.

Hostnames pointing to this address

2 names · as answered by each domain's own name servers

czechsoles.comfirst seen 2026-10-12
*.czechsoles.comfirst seen 2026-10-12