213.91.181.175 — 3 open ports, 33 known CVEs, network Mainstream doo Beograd

Known CVEs on this host

3open ports

3names pointing here

33known CVEs

0known exploited

Open ports and CVEs as of our latest check of this host, 2026-06-07.

CVEs by severity: CRITICAL 2 HIGH 7 MEDIUM 13 LOW 11

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: 26 on a distribution build — the fix may be backported (nginx 1.10.3, openssh 7.4p1). See them

Network: Mainstream doo Beograd AS51859
Open ports: 22, 80, 443 · at our latest check, 2026-06-07
Location: Bulgaria BG
Route: 213.91.181.0/24 · announced by Mainstream doo Beograd AS51859 RPKI valid
Organisation: Mainstream EU · Content / hosting
Registry network: BTC-VivaCloud · 213.91.181.0 - 213.91.181.255 · RIPE
Abuse contact: [email protected] · for BTC-VivaCloud
First seen: 2026-06-07 20:20 UTC
Last seen alive: 2026-06-07 20:21 UTC
Hosted domains: 3 names point 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_7.4p1 33 CVEs first 2026-06-07 · last 2026-06-07

Server: SSH-2.0-OpenSSH_7.4p1 Debian-10+deb9u6
Host key: ssh-ed25519 30fbc30d485168cf…

Raw response

SSH-2.0-OpenSSH_7.4p1 Debian-10+deb9u6

80/tcp HTTP nginx/1.10.3 (Ubuntu) first 2026-06-07 · last 2026-06-07

Status: 301 Moved Permanently
Title: 301 Moved Permanently
Server: nginx/1.10.3 (Ubuntu)

Raw response

HTTP/1.1 301 Moved Permanently
Server: nginx/1.10.3 (Ubuntu)
Date: Sun, 07 Jun 2026 20:20:47 GMT
Content-Type: text/html
Content-Length: 194
Connection: keep-alive
Location: https://review.sservice.bg/

<html>
<head><title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>nginx/1.10.3 (Ubuntu)</center>
</body>
</html>

443/tcp TLS first 2026-06-07 · last 2026-06-07

TLS: TLSv1.2
Certificate for: review.sservice.bg
Issued by: R12
Valid: 2026-04-27 → 2026-07-26

Raw response

HTTP/1.1 400 Bad Request
Server: nginx/1.10.3 (Ubuntu)
Date: Sun, 07 Jun 2026 20:20:47 GMT
Content-Type: text/html
Content-Length: 682
Connection: close

<html>
<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>
<body bgcolor="white">
<center><h1>400 Bad Request</h1></center>
<center>The plain HTTP request was sent to HTTPS port</center>
<hr><center>nginx/1.10.3 (Ubuntu)</center>
</body>
</html>
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Vulnerabilities

Distribution build — the fix may be backported (26)

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. 1 of them is known to be exploited.

CVEs by severity: CRITICAL 1 HIGH 12 MEDIUM 12 LOW 1

CVE	Software
CVE-2023-44487 HIGH 7.5 known exploited	nginx 1.10.3 · port 80
CVE-2017-20005 CRITICAL 9.8	nginx 1.10.3 · port 80
CVE-2022-41741 HIGH 7.8	nginx 1.10.3 · port 80
CVE-2021-23017 HIGH 7.7	nginx 1.10.3 · port 80
CVE-2017-7529 HIGH 7.5	nginx 1.10.3 · port 80
CVE-2018-16843 HIGH 7.5	nginx 1.10.3 · port 80
CVE-2018-16844 HIGH 7.5	nginx 1.10.3 · port 80
CVE-2019-9511 HIGH 7.5	nginx 1.10.3 · port 80
CVE-2019-9513 HIGH 7.5	nginx 1.10.3 · port 80
CVE-2020-15778 HIGH 7.4	openssh 7.4p1 · port 22
CVE-2021-3618 HIGH 7.4	nginx 1.10.3 · port 80
CVE-2022-41742 HIGH 7.1	nginx 1.10.3 · port 80
CVE-2021-41617 HIGH 7.0	openssh 7.4p1 · port 22
CVE-2019-6109 MEDIUM 6.8	openssh 7.4p1 · port 22
CVE-2019-6110 MEDIUM 6.8	openssh 7.4p1 · port 22
CVE-2019-9516 MEDIUM 6.5	nginx 1.10.3 · port 80
CVE-2018-16845 MEDIUM 6.1	nginx 1.10.3 · port 80
CVE-2019-6111 MEDIUM 5.9	openssh 7.4p1 · port 22
CVE-2020-14145 MEDIUM 5.9	openssh 7.4p1 · port 22
CVE-2016-20012 MEDIUM 5.3	openssh 7.4p1 · port 22
CVE-2017-15906 MEDIUM 5.3	openssh 7.4p1 · port 22
CVE-2018-15473 MEDIUM 5.3	openssh 7.4p1 · port 22
CVE-2018-15919 MEDIUM 5.3	openssh 7.4p1 · port 22
CVE-2018-20685 MEDIUM 5.3	openssh 7.4p1 · port 22
CVE-2019-20372 MEDIUM 5.3	nginx 1.10.3 · port 80
CVE-2021-36368 LOW 3.7	openssh 7.4p1 · 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

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

sservice.bgfirst seen 2026-10-03

review.sservice.bgfirst seen 2026-10-03

www.sservice.bgfirst seen 2026-10-03

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