CVE-2021-25296

HIGH
8.8
CVSS Score
Published: February 15, 2021 at 12:00 AM UTC
Updated: July 9, 2026 at 02:45 PM UTC
1 product affected across 1 vendorNagios XI

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Severity
HIGH8.8
Exploitation
CISA KEV
Exploit prediction
EPSS 72%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score71.9%

EPSS (Exploit Prediction Scoring System) estimates a 71.9% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Jan 18, 2022
Remediation Due
Feb 1, 2022
1731 days overdue

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.5.6 ≤ v ≤ 5.7.5

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-Other

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