CVE-2021-40345

Public Exploit

Description

An issue was discovered in Nagios XI 5.8.5. In the Manage Dashlets section of the Admin panel, an administrator can upload ZIP files. A command injection (within the name of the first file in the archive) allows an attacker to execute system commands.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 76.50% Top 5%
Vendor Advisory nagios.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT release notes vendor advisory
https://synacktiv.com not applicable
https://github.com/ArianeBlow/NagiosXI-EmersonFI/blob/main/README.md third party advisory exploit
https://www.synacktiv.com/sites/default/files/2021-10/Nagios_XI_multiple_vulnerabilities_0.pdf third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-40345?
CVE-2021-40345 has been scored as a high severity vulnerability.
How to fix CVE-2021-40345?
To fix CVE-2021-40345, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40345 being actively exploited in the wild?
It is possible that CVE-2021-40345 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~76% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.