CVE-2018-8735 is a remote command execution vulnerability in Nagios XI versions 5.2.x through 5.4.x prior to 5.4.13. The vulnerability allows an attacker to inject and execute arbitrary operating system commands on the target system due to improper sanitization of user-supplied input, leading to OS command injection.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit exploit module targeting Nagios XI versions 5.2.6 through 5.4.12 on Linux. The exploit chains multiple vulnerabilities (including SQL injection and command injection) to achieve remote root code execution. The attack flow involves setting the database user to root, exploiting SQL injection to enumerate API keys, creating a new admin user, authenticating as that user, and finally exploiting a command injection vulnerability to execute arbitrary commands as root. The module cleans up by removing the created admin user and restoring the original database user. The exploit is operational and provides a customizable payload, typically resulting in a root shell. The main endpoints targeted are various Nagios XI and NagiosQL web interface paths. The code is written in Ruby and is designed to be used within the Metasploit framework.
This repository contains a single Metasploit module (modules/exploits/linux/http/nagios_xi_chained_rce.rb) that exploits a chain of vulnerabilities in Nagios XI versions up to 5.2.7. The exploit leverages SQL injection, authentication bypass, file upload, command injection, and privilege escalation to ultimately achieve remote code execution as root on the target system. The module is highly weaponized, allowing the attacker to specify a payload (such as a reverse shell) that is delivered via a ZIP file upload to the Nagios XI web interface. The exploit interacts with several HTTP endpoints on the target, including those for extracting API tokens, obtaining admin cookies, and uploading/executing the payload. The code is written in Ruby and is designed to be run within the Metasploit framework, making it easy to use and customize. The targeted CVEs are CVE-2018-8733, CVE-2018-8734, CVE-2018-8735, and CVE-2018-8736, all affecting Nagios XI <= 5.2.7 on Linux platforms.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
No public activity tracked yet. Mallory keeps watching.
No public activity observed for this vulnerability.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.