CVE-2020-28907

critical

Description

Incorrect SSL certificate validation in Nagios Fusion 4.1.8 and earlier allows for Escalation of Privileges or Code Execution as root via vectors related to download of an untrusted update package in upgrade_to_latest.sh.

References

https://www.nagios.com/downloads/nagios-xi/change-log/

https://skylightcyber.com/2021/05/20/13-nagios-vulnerabilities-7-will-shock-you/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-21298

http://packetstormsecurity.com/files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cross-Site-Scripting-Code-Execution.html

Details

Source: Mitre, NVD

Published: 2021-05-24

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H