What is CVE-2011-10035?

CVE-2011-10035 is a high-severity vulnerability in Nagios Xi, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2025-10-30.

How severe is CVE-2011-10035?

High severity. CVSS v3 base score is 7.0 out of 10.

Vulnerability in Nagios Xi

CVE-2011-10035

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.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.002 (12.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nagios Nagios_xi — versions 2011
Nagios Xi — versions 0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

disclosure@vulncheck.com (release-notes, Release Notes, patch)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2011-10035?: CVE-2011-10035 is a high-severity vulnerability in Nagios Xi, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2025-10-30.
How severe is CVE-2011-10035?: High severity. CVSS v3 base score is 7.0 out of 10.