CVE-2018-8735

HIGHNVD 8.88.8—Weaponized

8.8

Remote command execution (RCE) vulnerability in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an attacker to execute arbitrary commands on the target system, aka OS command injection.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 98.8%
KEV: Not listed

Published

April 18, 2018

Last Modified

November 21, 2024

References (12)

cve@mitrehttps://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT
cve@mitrehttps://blog.redactedsec.net/exploits/2018/04/26/nagios.html
cve@mitrehttps://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f
cve@mitrehttps://www.exploit-db.com/exploits/44560/
cve@mitrehttps://www.exploit-db.com/exploits/44969/
cve@mitrehttps://www.nagios.com/downloads/nagios-xi/change-log/
af854a3a-2127-422b-91ae-364da2661108https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT
af854a3a-2127-422b-91ae-364da2661108https://blog.redactedsec.net/exploits/2018/04/26/nagios.html
af854a3a-2127-422b-91ae-364da2661108https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/44560/
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/44969/
af854a3a-2127-422b-91ae-364da2661108https://www.nagios.com/downloads/nagios-xi/change-log/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-78OS Command Injection

Data Freshness Timeline

(refreshed 5× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 09:10 UTCEG score recompute
2026-05-28 09:10 UTCGHSA enrichment
2026-05-24 21:42 UTCOSV refresh

Publicly available exploits

(4 references)

Working exploit code is in the public domain (2 Metasploit modules) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-44969✓ verified
First seen Jul 2, 2018
Nagios XI 5.2.6-5.4.12 - Chained Remote Code Execution (Metasploit)
Open source ↗
Exploit-DBEDB-44560✓ verified
First seen Apr 30, 2018
Nagios XI 5.2.6 < 5.2.9 / 5.3 / 5.4 - Chained Remote Root
Open source ↗
Metasploitexploit/linux/http/nagios_xi_chained_rce_2_electric_boogaloo✓ verified
First seen Apr 17, 2018
Nagios XI Chained Remote Code Execution
Open source ↗
Metasploitexploit/linux/http/nagios_xi_chained_rce✓ verified
First seen Mar 6, 2016
Nagios XI Chained Remote Code Execution
Open source ↗

Frequently asked(5)

What is CVE-2018-8735?

CVE-2018-8735 is a high vulnerability published on April 18, 2018. Remote command execution (RCE) vulnerability in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an attacker to execute arbitrary commands on the target system, aka OS command injection.

When was CVE-2018-8735 disclosed?

CVE-2018-8735 was first published in the National Vulnerability Database on April 18, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-8735 actively exploited?

CVE-2018-8735 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-8735?

CVE-2018-8735 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2018-8735?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-8735, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-8735

📅 Published

🔄 Last Modified

🔗 References (12)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-8735?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (12)

Frequently asked(5)

Related CVEs(same CWE)