CVE-2021-40344
7.2 · HIGHOverview
CVE-2021-40344 is a high-severity vulnerability affecting nagios nagios_xi. It was published on October 26, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
An issue was discovered in Nagios XI 5.8.5. In the Custom Includes section of the Admin panel, an administrator can upload files with arbitrary extensions as long as the MIME type corresponds to an image. Therefore it is possible to upload a crafted PHP script to achieve remote command execution.
Remediation
Check the references section for vendor advisories and patches from nagios. Update nagios_xi to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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References
Frequently Asked Questions
What is CVE-2021-40344?
CVE-2021-40344 is a high-severity vulnerability affecting nagios nagios_xi. It was published on October 26, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2021-40344?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-40344?
Check the references section for vendor advisories and patches from nagios. Update nagios_xi to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-40344?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-40344 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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