CVE-2025-34286 Nagios XI < 2026R1 RCE via Run Check Command in CCM
Authenticated administrators can inject shell metacharacters in Nagios XI CCM Run Check commands to execute arbitrary code on the server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34286?
CVE-2025-34286 is a critical command injection vulnerability in Nagios Nagios Xi, published on 30 Oct 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Nagios XI versions prior to 2026R1 contain a remote code execution vulnerability in the Core Config Manager (CCM) Run Check command. Insufficient validation/escaping of parameters used to build backend command lines allows an authenticated administrator to inject shell metacharacters that are executed on the server. Successful exploitation results in arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to gain control of the underlying host operating system.
Weakness: CWE-78
Which versions are affected by CVE-2025-34286?
It affects 1 product.
Products include Nagios Nagios Xi.
How do I fix CVE-2025-34286?
No fix has been published for CVE-2025-34286 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-34286 being exploited?
There is no known exploitation of CVE-2025-34286 in the wild and no public exploit code.
Other vulnerabilities in Nagios Nagios Xi
Sources
Also known as GHSA-p9vf-j43m-6hqh.