Is CVE-2021-25296 in the CISA KEV catalog?

Yes. CVE-2021-25296 is on the CISA Known Exploited Vulnerabilities list, added 2022-01-18.

What is the CVSS severity of CVE-2021-25296?

CVE-2021-25296 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-25296?

CVE-2021-25296 has an EPSS score of 72.38% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2021-25296

HIGHCISA KEVEPSS 99th pctl

8.8

CVSS v3

NVD

Description

Nagios XI version xi-5.7.5 is affected by OS command injection. The vulnerability exists in the file /usr/local/nagiosxi/html/includes/configwizards/windowswmi/windowswmi.inc.php due to improper sanitization of authenticated user-controlled input by a single HTTP request, which can lead to OS command injection on the Nagios XI server.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

72.38%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Nagios XI OS Command Injection

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

Apply updates per vendor instructions.

Remediation due: 2022-02-01

References

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.