CVE-2021-25298Actively exploitedAdded to KEV 2022-01-18

Nagios XI OS Command Injection

Nagios, Nagios XI

Description

Nagios XI contains a vulnerability which can lead to OS command injection on the Nagios XI server.

CVSS severity for this advisory hasn't been enriched from NVD yet, check back shortly.

EPSS, exploit probability

Critical

73.6%

estimated chance of real-world exploitation in the next 30 days, higher than 99.5% of every CVE FIRST.org scores

Refreshed 10/28/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.

Required action

Apply updates per vendor instructions.

CISA-recommended due date: 2022-02-01

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