CVE-2021-37344
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedNagios XI Switch Wizard before version 2.5.7 is vulnerable to remote code execution through improper neutralisation of special elements used in an OS Command (OS Command injection).
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceNagios XI Switch Wizard before version 2.5.7 contains an OS command injection vulnerability that allows remote attackers to execute arbitrary commands on the underlying operating system through unsanitized user input being passed to system shell commands.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 2.5.7CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Confirm Nagios XI installationCheck for Nagios XI web interface or look for its installation directory (commonly /usr/local/nagiosxi or /opt/nagiosxi)Affected if Nagios XI is not installed, the Switch Wizard component cannot be present
-
Identify Switch Wizard component versionAccess the Nagios XI admin interface, navigate to the Switch Wizard component (Admin > Wizards > Switch Wizard) or run: grep -i 'switch.*wizard' /usr/local/nagiosxi/etc/components.ini 2>/dev/null || find /usr/local/nagiosxi -name '*switch*wizard*' -type f 2>/dev/nullAffected if The Switch Wizard version is found to be below 2.5.7 (e.g., 2.5.6, 2.5.5, etc.)
-
Check if Switch Wizard is enabledIn Nagios XI, go to Admin > System > Wizards and verify the Switch Wizard plugin status, or check the components directory for the switch wizard configuration fileAffected if The Switch Wizard is enabled and accessible to users with wizard configuration privileges
-
Verify network accessibilityConfirm the Nagios XI web interface is exposed to network users. Check if the /nagiosxi/interface/ or similar endpoint for the wizard is reachable from untrusted networksAffected if The Nagios XI administrative interface is reachable from untrusted or public networks without proper access controls
You are affected if the Switch Wizard component is installed with a version lower than 2.5.7 and is accessible to potential attackers through the network.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped2.5.7
Upgrade Nagios XI Switch Wizard to version 2.5.7 or later. If immediate patching is not feasible, restrict network access to the Nagios XI administrative interface to minimize exposure.
Nagios XI with Switch Wizard 2.5.7 or later
- Confirm current Nagios XI version by checking the admin interface or running 'rpm -q nagiosxi'
- Backup the Nagios XI configuration and database before proceeding with any upgrade
- Access the Nagios XI administrative interface and navigate to the System Updates section, or use the command-line update utility if available
- Apply the update to Nagios XI that includes Switch Wizard version 2.5.7 or later
- After upgrade, verify the Switch Wizard version is 2.5.7 or higher in the Admin > Wizards section
- Test that the Switch Wizard functionality works correctly with the updated version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,624.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-37344 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-37344 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data