CVE-2018-15708

CRITICAL

Nagios XI Magpie_debug.php Root Remote Code Execution

Title source: metasploit
STIX 2.1

Exploitation Summary

EIP tracks 4 public exploits for CVE-2018-15708. PoCs published by Chris Lyne, lkduy2602, Chris Lyne (@lynerc), Guillaume André (@yaumn_), bcoles, including Metasploit module exploits/linux/http/nagios_xi_magpie_debug.

AI-analyzed exploit summary This exploit leverages CVE-2018-15710 (and CVE-2018-15708) to achieve remote code execution and privilege escalation on Nagios XI versions 2012r1.0 to 5.5.6. It uses a self-signed certificate to serve a malicious PHP file via an HTTP server, then exploits MagpieRSS to write the file to the target system, leading to arbitrary command execution and root access via sudo misconfigurations.

Description

Snoopy 1.0 in Nagios XI 5.5.6 allows remote unauthenticated attackers to execute arbitrary commands via a crafted HTTP request.

Exploits (4)

exploitdb WORKING POC
by Chris Lyne · pythonwebappslinux
https://www.exploit-db.com/exploits/46221

This exploit leverages CVE-2018-15710 (and CVE-2018-15708) to achieve remote code execution and privilege escalation on Nagios XI versions 2012r1.0 to 5.5.6. It uses a self-signed certificate to serve a malicious PHP file via an HTTP server, then exploits MagpieRSS to write the file to the target system, leading to arbitrary command execution and root access via sudo misconfigurations.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Nagios XI 2012r1.0 to 5.5.6
No auth needed
Prerequisites: Network access to Nagios XI instance · MagpieRSS debug script accessible · Outbound connectivity from target to attacker's HTTP server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec SCANNER
by lkduy2602 · poc
https://github.com/lkduy2602/Detecting-CVE-2018-15708-Vulnerabilities

This repository contains a Python script that detects potential exploitation attempts of CVE-2018-15708 by monitoring network traffic for specific TCP flags and window sizes. It logs and emails alerts when suspicious patterns are detected.

Classification
Scanner 90%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: Network devices vulnerable to CVE-2018-15708
No auth needed
Prerequisites: Network access to monitor traffic · Python with Scapy and colorama libraries
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC
rubyremotelinux
https://www.exploit-db.com/exploits/47039

This Metasploit module exploits CVE-2018-15708 (unauthenticated RCE via magpie_debug.php) and CVE-2018-15710 (local privilege escalation) to achieve a root reverse shell on Nagios XI 5.5.6. It uploads a webshell and meterpreter payload, then escalates privileges using autodiscovery or NSE scripts.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Nagios XI 5.5.6
No auth needed
Prerequisites: Network access to Nagios XI server · Publicly reachable IP for callback
devstral-2 · analyzed Feb 19, 2026 Full analysis →
metasploit WORKING POC EXCELLENT
by Chris Lyne (@lynerc), Guillaume André (@yaumn_), bcoles · rubypoclinux
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/nagios_xi_magpie_debug.rb

This Metasploit module exploits CVE-2018-15708 (unauthenticated RCE) and CVE-2018-15710 (local privilege escalation) in Nagios XI <= 5.5.6 to achieve root-level command execution. It uploads a PHP web shell and a Meterpreter payload to writable directories, then escalates privileges via sudo misconfigurations.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Nagios XI <= 5.5.6
No auth needed
Prerequisites: Network access to Nagios XI web interface (port 443/HTTPS) · Publicly reachable IP for callback
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/46221/
Exploit, Third Party Advisory x_refsource_misc
https://www.tenable.com/security/research/tra-2018-37

Scores

CVSS v3 9.8
EPSS 0.9134
EPSS Percentile 99.7%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (1)
nagios/nagios_xi 5.5.6
Published Nov 14, 2018
Tracked Since Feb 18, 2026