CVE-2021-36364: Nagios XI

Critical severity, CVSS 9.8. EPSS: 4% chance of exploitation in the next 30 days.

Nagios XI before 5.8.5 incorrectly allows backup_xi.sh wildcards.

Affected products

• Nagios Nagios XI: before 5.8.5 (fixed in 5.8.5)

Published 2021-09-28. Last modified 2026-06-17.