CVE-2021-3273
HIGHCVSS 7.2/10EPSS 5.63%
Last modified
CVE-2021-3273 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.. EPSS estimates a 5.63% chance of exploitation in the next 30 days.
Description
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nagios | Nagios Xi | < 5.7 |
References
- https://gist.github.com/leommxj/93edce6f8572cefe79a3d7da4389374eExploit, Third Party Advisory
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
- https://gist.github.com/leommxj/93edce6f8572cefe79a3d7da4389374eExploit, Third Party Advisory
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3273?
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.
How severe is CVE-2021-3273?
CVE-2021-3273 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 5.63% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3273?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-3273?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST