Medium (6.5) in nagios nagios xi. EPSS 2.0% chance of exploitation in the next 30 days.
In Nagios XI through 5.8.5, a read-only Nagios user (due to an incorrect permission check) is able to schedule downtime for any host/services. This allows an attacker to permanently disable all monitoring checks.
Severity
CVSS 3.1
6.5 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS
2.0% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)