Host

81.91.83.35

Tags: End-of-life software

As of our latest check on 2026-05-24, 81.91.83.35 (Web4U s.r.o., AS39790, Czechia) had 1 open port (80) and 24 known CVEs.

Known CVEs on this host

1open port
0names pointing here
24known CVEs
0known exploited

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

CVEs by severity: CRITICAL 1 HIGH 6 MEDIUM 11 LOW 6

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

Network
Web4U s.r.o. AS39790
Open ports
80 · at our latest check, 2026-05-24
Location
Czechia CZ
Hostname
vs486.server4u.cz · reverse DNS, checked 2026-10-04
Route
81.91.80.0/21 · announced by Web4U s.r.o. AS39790 RPKI valid
Organisation
Web4U s.r.o. · Content / hosting
Registry network
WEB4U-NET-CUST-83 · 81.91.83.0 - 81.91.83.255 · Web4U s.r.o. · RIPE
Abuse contact
[email protected] · for WEB4U-NET-CUST-83
First seen
2026-05-24 02:32 UTC
Last seen alive
2026-05-24 02:33 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 (1)

80/tcp SSH OpenSSH_6.7p1 24 CVEs first 2026-05-24 · last 2026-05-24
Server
SSH-2.0-OpenSSH_6.7p1 Debian-5+deb8u4
Host key
ssh-rsa 37748b36cd504c5d…
Raw response
SSH-2.0-OpenSSH_6.7p1 Debian-5+deb8u4

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

CVESoftware
CVE-2016-1908 CRITICAL 9.8 openssh 6.7p1 · port 80
CVE-2015-5600 HIGH 8.1 openssh 6.7p1 · port 80
CVE-2016-0778 HIGH 8.1 openssh 6.7p1 · port 80
CVE-2015-8325 HIGH 7.8 openssh 6.7p1 · port 80
CVE-2016-10012 HIGH 7.8 openssh 6.7p1 · port 80
CVE-2016-10708 HIGH 7.5 openssh 6.7p1 · port 80
CVE-2016-6515 HIGH 7.5 openssh 6.7p1 · port 80
CVE-2016-10009 HIGH 7.3 openssh 6.7p1 · port 80
CVE-2015-6564 HIGH 7.0 openssh 6.7p1 · port 80
CVE-2016-10010 HIGH 7.0 openssh 6.7p1 · port 80
CVE-2019-6109 MEDIUM 6.8 openssh 6.7p1 · port 80
CVE-2019-6110 MEDIUM 6.8 openssh 6.7p1 · port 80
CVE-2016-0777 MEDIUM 6.5 openssh 6.7p1 · port 80
CVE-2015-6563 MEDIUM 6.4 openssh 6.7p1 · port 80
CVE-2016-3115 MEDIUM 6.4 openssh 6.7p1 · port 80
CVE-2016-10011 MEDIUM 6.2 openssh 6.7p1 · port 80
CVE-2016-6210 MEDIUM 5.9 openssh 6.7p1 · port 80
CVE-2019-6111 MEDIUM 5.9 openssh 6.7p1 · port 80
CVE-2020-14145 MEDIUM 5.9 openssh 6.7p1 · port 80
CVE-2017-15906 MEDIUM 5.3 openssh 6.7p1 · port 80
CVE-2018-15473 MEDIUM 5.3 openssh 6.7p1 · port 80
CVE-2018-15919 MEDIUM 5.3 openssh 6.7p1 · port 80
CVE-2018-20685 MEDIUM 5.3 openssh 6.7p1 · port 80
CVE-2015-5352 MEDIUM 4.3 openssh 6.7p1 · 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.