CVE-2025-34284

high-risk
Published 2025-10-30

Nagios XI versions prior to 2024R2 contain a command injection vulnerability in the WinRM plugin. Insufficient validation of user-supplied parameters allows an authenticated administrator to inject shell metacharacters that are incorporated into backend command invocations. Successful exploitation enables arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to modify configuration, exfiltrate data, disrupt monitoring operations, or execute commands on the underlying host operating system.

Do I need to act?

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0.46% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Nagios

References (3)

Release Notes https://www.nagios.com/changelog/nagios-xi/
Vendor Advisory https://www.nagios.com/products/security/#nagios-xi
Third Party Advisory https://www.vulncheck.com/advisories/nagios-xi-authenticated-command-injection-v...
53
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 2/34 · Minimal
Exposure 21/34 · High