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Public proof of conceptFix available

CVE-2018-8736

A public proof of concept exists; no exploitation attested.

  • Published2018-04-18
  • Fixed in5.4.13

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A privilege escalation vulnerability in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an attacker to leverage an RCE vulnerability escalating to root.

Timeline

dates in UTC
  1. 2018-04-30Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-8736?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-8736?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Nagios nagios xi
BranchAffectedFixed in
5.x≥ 5.2.0, < 5.4.135.4.13

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Nagios nagios xi to 5.4.13

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-44560EDB-44969
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
2 modulesexploit/linux/http/nagios_xi_chained_rcerank: excellentexploit/linux/http/nagios_xi_chained_rce_2_electric_boogaloorank: manualModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2018-04-18
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-8736?

A privilege escalation vulnerability in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an attacker to leverage an RCE vulnerability escalating to root.

Is CVE-2018-8736 actively exploited?

Active exploitation of CVE-2018-8736 has not been confirmed. Its EPSS score was 45.6% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-8736?

CVE-2018-8736 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Same product first, then the same vendor advisory and the same publication week.

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Sources for this record