104.255.197.23 — 4 open ports, 35 known CVEs, network A2 Hosting, Inc.

Known CVEs on this host

4open ports

0names pointing here

35known CVEs

1known exploited

Open ports and CVEs as of our latest check of this host, 2026-08-28.

CVEs by severity: CRITICAL 1 HIGH 10 MEDIUM 12 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: 15 on a distribution build — the fix may be backported (openssh 7.4). See them

Network: A2 Hosting, Inc. AS55293
Open ports: 21, 22, 25, 443 · at our latest check, 2026-08-28
Location: United States US
Hostname: 104.255.197.23.static.a2webhosting.com · reverse DNS, checked 2026-11-04
Route: 104.255.192.0/21 · announced by A2 Hosting, Inc. AS55293 RPKI valid
Organisation: hosting.com · Content / hosting
Registry network: INTERNET-BLK-A2HOS-9 · 104.255.192.0 - 104.255.199.255 · A2 Hosting, Inc. · ARIN
First seen: 2026-08-28 09:29 UTC
Last seen alive: 2026-08-28 10:47 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 (4)

21/tcp FTP first 2026-08-28 · last 2026-08-28

Banner: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ---------- 220-You are user number 3 of 80 allowed. 220-Local time is now 06:47. Server port: 21. 220-This is a private system - No anonymous logi

Raw response

220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
220-You are user number 3 of 80 allowed.
220-Local time is now 06:46. Server port: 21.
220-This is a private system - No anonymous login
220-IPv6 connections are also welcome on this server.
220 You will be disconnected after 15 minutes of inactivity.

22/tcp SSH OpenSSH_7.4 31 CVEs first 2026-08-28 · last 2026-08-28

Server: SSH-2.0-OpenSSH_7.4
Host key: ssh-ed25519 06d72290b1c07899…

Raw response

SSH-2.0-OpenSSH_7.4

25/tcp SMTP exim 4.99.5 4 CVEs first 2026-08-28 · last 2026-08-28

Banner: 220-mi3-ls12.a2hosting.com ESMTP Exim 4.99.5 #2 Fri, 28 Aug 2026 06:47:22 -0400 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail.

Raw response

220-mi3-ls12.a2hosting.com ESMTP Exim 4.99.5 #2 Fri, 28 Aug 2026 06:46:01 -0400 
220-We do not authorize the use of this system to transport unsolicited, 
220 and/or bulk e-mail.

443/tcp HTTP LiteSpeed first 2026-08-28 · last 2026-08-28

Status: 200 OK
Server: LiteSpeed

Raw response

HTTP/1.0 301 Moved Permanently
Location: https://104.255.197.23/
Cache-Control: private, no-cache, max-age=0
Pragma: no-cache
Server:LiteSpeed
Content-Length: 0
Connection: Close

Vulnerabilities

Distribution build — the fix may be backported (15)

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 2 MEDIUM 11 LOW 1

CVE	Software
CVE-2023-38408 CRITICAL 9.8	openssh 7.4 · port 22
CVE-2020-15778 HIGH 7.4	openssh 7.4 · port 22
CVE-2021-41617 HIGH 7.0	openssh 7.4 · port 22
CVE-2019-6109 MEDIUM 6.8	openssh 7.4 · port 22
CVE-2019-6110 MEDIUM 6.8	openssh 7.4 · port 22
CVE-2023-51385 MEDIUM 6.5	openssh 7.4 · port 22
CVE-2019-6111 MEDIUM 5.9	openssh 7.4 · port 22
CVE-2020-14145 MEDIUM 5.9	openssh 7.4 · port 22
CVE-2023-48795 MEDIUM 5.9	openssh 7.4 · port 22
CVE-2016-20012 MEDIUM 5.3	openssh 7.4 · port 22
CVE-2017-15906 MEDIUM 5.3	openssh 7.4 · port 22
CVE-2018-15473 MEDIUM 5.3	openssh 7.4 · port 22
CVE-2018-15919 MEDIUM 5.3	openssh 7.4 · port 22
CVE-2018-20685 MEDIUM 5.3	openssh 7.4 · port 22
CVE-2021-36368 LOW 3.7	openssh 7.4 · 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.

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