- Server
- SSH-2.0-OpenSSH_6.7p1 Debian-5+deb8u8
- Host key
- ssh-ed25519 fe788b2fafd077df…
Raw response
SSH-2.0-OpenSSH_6.7p1 Debian-5+deb8u8
Host
81.91.92.96
Tags: Self-signed certificate Expired certificate End-of-life software
As of our latest check on 2026-05-24, 81.91.92.96 (Web4U s.r.o., AS39790, Czechia) had 3 open ports (22, 80, 443) and 135 known CVEs, 2 known to be exploited.
Known CVEs on this host
3open ports
0names pointing here
135known CVEs
2known exploited
Open ports and CVEs as of our latest check of this host, 2026-05-24.
CVEs by severity: CRITICAL 27 HIGH 55 MEDIUM 46 LOW 7
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: 24 on a distribution build — the fix may be backported (openssh 6.7p1). See them
Not counted: 4 only affect another platform (http_server 2.4.10). See them
- Network
- Web4U s.r.o. AS39790
- Open ports
- 22, 80, 443 · at our latest check, 2026-05-24
- Location
- Czechia CZ
- Hostname
- vs1137.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
- 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)
- Status
- 200 OK
- Server
- Apache/2.4.10
Raw response
HTTP/1.1 200 OK Date: Sun, 24 May 2026 02:32:13 GMT Server: Apache/2.4.10 Last-Modified: Mon, 14 Dec 2020 02:56:51 GMT ETag: "46-5b663cb3889bf-gzip" Accept-Ranges: bytes Vary: Accept-Encoding Content-Encoding: gzip Content-Length: 88 Content-Type: text/html ���M-IT�())�M-,�,�U*JM+J-�PRH��+I�+�U2�.-ʱ�)���/+6446�+N-*K-2)�K�R�]��F
443/tcp
TLS
first 2026-05-24 · last 2026-05-24
- TLS
- TLSv1.2
- Certificate for
- vs1137.server4u.cz
- Issued by
- vs1137.server4u.cz
- Valid
- 2016-01-14 → 2026-01-11
- Note
- self-signed certificate
Raw response
HTTP/1.1 400 Bad Request Date: Sun, 24 May 2026 02:32:13 GMT Server: Apache/2.4.10 Content-Length: 362 Connection: close Content-Type: text/html; charset=iso-8859-1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>400 Bad Request</title> </head><body> <h1>Bad Request</h1> <p>Your browser sent a request that this server could not understand.<br /> Reason: You're speaking plain HTTP to an SSL-enabled server port.<br /> Instead use the HTTPS scheme to access this URL, please.<br /> </p> </body></html>
Vulnerabilities
Distribution build — the fix may be backported (24)
These CVEs were matched on software built by an operating-system distribution whose package revision the service does not show. Distributions often fix a flaw without changing the upstream version number, so whether this build is affected cannot be told from its version. They are not counted.
CVEs by severity: CRITICAL 1 HIGH 9 MEDIUM 14
| CVE | Software |
|---|---|
| CVE-2016-1908 CRITICAL 9.8 | openssh 6.7p1 · port 22 |
| CVE-2015-5600 HIGH 8.1 | openssh 6.7p1 · port 22 |
| CVE-2016-0778 HIGH 8.1 | openssh 6.7p1 · port 22 |
| CVE-2015-8325 HIGH 7.8 | openssh 6.7p1 · port 22 |
| CVE-2016-10012 HIGH 7.8 | openssh 6.7p1 · port 22 |
| CVE-2016-10708 HIGH 7.5 | openssh 6.7p1 · port 22 |
| CVE-2016-6515 HIGH 7.5 | openssh 6.7p1 · port 22 |
| CVE-2016-10009 HIGH 7.3 | openssh 6.7p1 · port 22 |
| CVE-2015-6564 HIGH 7.0 | openssh 6.7p1 · port 22 |
| CVE-2016-10010 HIGH 7.0 | openssh 6.7p1 · port 22 |
| CVE-2019-6109 MEDIUM 6.8 | openssh 6.7p1 · port 22 |
| CVE-2019-6110 MEDIUM 6.8 | openssh 6.7p1 · port 22 |
| CVE-2016-0777 MEDIUM 6.5 | openssh 6.7p1 · port 22 |
| CVE-2015-6563 MEDIUM 6.4 | openssh 6.7p1 · port 22 |
| CVE-2016-3115 MEDIUM 6.4 | openssh 6.7p1 · port 22 |
| CVE-2016-10011 MEDIUM 6.2 | openssh 6.7p1 · port 22 |
| CVE-2016-6210 MEDIUM 5.9 | openssh 6.7p1 · port 22 |
| CVE-2019-6111 MEDIUM 5.9 | openssh 6.7p1 · port 22 |
| CVE-2020-14145 MEDIUM 5.9 | openssh 6.7p1 · port 22 |
| CVE-2017-15906 MEDIUM 5.3 | openssh 6.7p1 · port 22 |
| CVE-2018-15473 MEDIUM 5.3 | openssh 6.7p1 · port 22 |
| CVE-2018-15919 MEDIUM 5.3 | openssh 6.7p1 · port 22 |
| CVE-2018-20685 MEDIUM 5.3 | openssh 6.7p1 · port 22 |
| CVE-2015-5352 MEDIUM 4.3 | openssh 6.7p1 · port 22 |
Only affects another platform (4)
These CVEs need a platform this host visibly does not run (for example a flaw of the Windows build on a Linux host). They are not counted.
CVEs by severity: HIGH 2 MEDIUM 2
| CVE | Software |
|---|---|
| CVE-2024-40898 HIGH 7.5 | http_server 2.4.10 · port 80 |
| CVE-2024-43394 HIGH 7.5 | http_server 2.4.10 · port 80 |
| CVE-2020-13938 MEDIUM 5.5 | http_server 2.4.10 · port 80 |
| CVE-2022-28330 MEDIUM 5.3 | http_server 2.4.10 · port 80 |
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.