CVE-2020-35578

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 81.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-01-13 · updated 2026-06-17
Weakness: CWE-78

Description

An issue was discovered in the Manage Plugins page in Nagios XI before 5.8.0. Because the line-ending conversion feature is mishandled during a plugin upload, a remote, authenticated admin user can execute operating-system commands.

Affected products

Nagios XI: before 5.8.0 — fixed in 5.8.0

How to fix

Upgrade to a fixed version: Nagios XI 5.8.0. Check the vendor advisory for mitigations.

References

http://packetstormsecurity.com/files/160948/Nagios-XI-5.7.x-Remote-Code-Execution.html
http://packetstormsecurity.com/files/162207/Nagios-XI-Remote-Code-Execution.html
https://www.nagios.com/downloads/nagios-xi/change-log/
https://www.nagios.com/products/security/
http://packetstormsecurity.com/files/160948/Nagios-XI-5.7.x-Remote-Code-Execution.html
http://packetstormsecurity.com/files/162207/Nagios-XI-Remote-Code-Execution.html
https://www.nagios.com/downloads/nagios-xi/change-log/
https://www.nagios.com/products/security/

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