OSN

Host

161.53.131.231

Tags: End-of-life software

As of our latest check on 2026-06-03, 161.53.131.231 (Croatian Academic and Research Network, AS2108, Croatia) had 2 open ports (22, 80) and 15 known CVEs, 1 known to be exploited.

Known CVEs on this host

2open ports
0names pointing here
15known CVEs
1known exploited

Open ports and CVEs as of our latest check of this host, 2026-06-03.

CVEs by severity: CRITICAL 1 HIGH 11 MEDIUM 3

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: 50 on a distribution build — the fix may be backported (openssh 7.3p1). See them

Network
Croatian Academic and Research Network AS2108
Open ports
22, 80 · at our latest check, 2026-06-03
Location
Croatia HR
Hostname
gu.irb.hr · reverse DNS, checked 2026-10-05
Route
161.53.0.0/16 · announced by Croatian Academic and Research Network AS2108 RPKI valid
Organisation
CARNet · Educational/Research
Registry network
CARNET-IRBZG · 161.53.131.72 - 161.53.131.255 · RIPE
Abuse contact
[email protected] · for CARNET-IRBZG
First seen
2026-06-03 09:11 UTC
Last seen alive
2026-06-03 09:12 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 (2)

22/tcp SSH OpenSSH_7.3p1 first 2026-06-03 · last 2026-06-03
Server
SSH-2.0-OpenSSH_7.3p1 Ubuntu-1ubuntu0.1
Host key
ssh-ed25519 fa7c100cdf0fd8cc…
Raw response 
SSH-2.0-OpenSSH_7.3p1 Ubuntu-1ubuntu0.1
80/tcp HTTP nginx/1.10.1 (Ubuntu) 15 CVEs first 2026-06-03 · last 2026-06-03
Status
200 OK
Server
nginx/1.10.1 (Ubuntu)
Raw response 
HTTP/1.1 200 OK
Server: nginx/1.10.1 (Ubuntu)
Date: Wed, 03 Jun 2026 09:11:58 GMT
Content-Type: text/html
Content-Length: 66
Last-Modified: Thu, 05 May 2022 16:45:18 GMT
Connection: keep-alive
ETag: "6273ff1e-42"
Accept-Ranges: bytes

<A HREF="http://gridvision.irb.hr/">http://gridvision.irb.,hr/<A>

Vulnerabilities

Distribution build — the fix may be backported (50)

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 11 MEDIUM 23 LOW 15

CVESoftware
CVE-2023-38408 CRITICAL 9.8 openssh 7.3p1 · port 22
CVE-2026-35385 HIGH 8.1 openssh 7.3p1 · port 22
CVE-2026-35414 HIGH 8.1 openssh 7.3p1 · port 22
CVE-2016-10012 HIGH 7.8 openssh 7.3p1 · port 22
CVE-2026-60002 HIGH 7.7 openssh 7.3p1 · port 22
CVE-2016-10708 HIGH 7.5 openssh 7.3p1 · port 22
CVE-2016-8858 HIGH 7.5 openssh 7.3p1 · port 22
CVE-2026-60000 HIGH 7.5 openssh 7.3p1 · port 22
CVE-2020-15778 HIGH 7.4 openssh 7.3p1 · port 22
CVE-2016-10009 HIGH 7.3 openssh 7.3p1 · port 22
CVE-2016-10010 HIGH 7.0 openssh 7.3p1 · port 22
CVE-2021-41617 HIGH 7.0 openssh 7.3p1 · port 22
CVE-2019-6109 MEDIUM 6.8 openssh 7.3p1 · port 22
CVE-2019-6110 MEDIUM 6.8 openssh 7.3p1 · port 22
CVE-2025-26465 MEDIUM 6.8 openssh 7.3p1 · port 22
CVE-2023-51385 MEDIUM 6.5 openssh 7.3p1 · port 22
CVE-2026-106585 MEDIUM 6.5 openssh 7.3p1 · port 22
CVE-2026-35387 MEDIUM 6.5 openssh 7.3p1 · port 22
CVE-2026-59998 MEDIUM 6.5 openssh 7.3p1 · port 22
CVE-2026-60001 MEDIUM 6.5 openssh 7.3p1 · port 22
CVE-2016-10011 MEDIUM 6.2 openssh 7.3p1 · port 22
CVE-2019-6111 MEDIUM 5.9 openssh 7.3p1 · port 22
CVE-2020-14145 MEDIUM 5.9 openssh 7.3p1 · port 22
CVE-2023-48795 MEDIUM 5.9 openssh 7.3p1 · port 22
CVE-2026-59999 MEDIUM 5.9 openssh 7.3p1 · port 22
CVE-2026-59995 MEDIUM 5.4 openssh 7.3p1 · port 22
CVE-2026-59996 MEDIUM 5.4 openssh 7.3p1 · port 22
CVE-2026-59997 MEDIUM 5.4 openssh 7.3p1 · port 22
CVE-2016-20012 MEDIUM 5.3 openssh 7.3p1 · port 22
CVE-2017-15906 MEDIUM 5.3 openssh 7.3p1 · port 22
CVE-2018-15473 MEDIUM 5.3 openssh 7.3p1 · port 22
CVE-2018-15919 MEDIUM 5.3 openssh 7.3p1 · port 22
CVE-2018-20685 MEDIUM 5.3 openssh 7.3p1 · port 22
CVE-2026-73282 MEDIUM 4.8 openssh 7.3p1 · port 22
CVE-2026-106552 MEDIUM 4.2 openssh 7.3p1 · port 22
CVE-2021-36368 LOW 3.7 openssh 7.3p1 · port 22
CVE-2026-106582 LOW 3.7 openssh 7.3p1 · port 22
CVE-2025-61984 LOW 3.6 openssh 7.3p1 · port 22
CVE-2025-61985 LOW 3.6 openssh 7.3p1 · port 22
CVE-2026-73281 LOW 3.5 openssh 7.3p1 · port 22
CVE-2026-106587 LOW 3.3 openssh 7.3p1 · port 22
CVE-2026-106588 LOW 3.1 openssh 7.3p1 · port 22
CVE-2026-106589 LOW 2.9 openssh 7.3p1 · port 22
CVE-2026-106583 LOW 2.5 openssh 7.3p1 · port 22
CVE-2026-106584 LOW 2.5 openssh 7.3p1 · port 22
CVE-2026-106586 LOW 2.5 openssh 7.3p1 · port 22
CVE-2026-35388 LOW 2.5 openssh 7.3p1 · port 22
CVE-2026-73283 LOW 2.5 openssh 7.3p1 · port 22
CVE-2026-106553 LOW 2.2 openssh 7.3p1 · port 22
CVE-2026-106555 LOW 2.2 openssh 7.3p1 · 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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