CVE-2020-28906

Published: May 24, 2021Modified: Jun 17, 2026

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

Incorrect File Permissions in Nagios XI 5.7.5 and earlier and Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to root. Low-privileged users are able to modify files that are included (aka sourced) by scripts executed by root.

Affected (2)

Products: Nagios: Fusion, Nagios Xi

Nagios

2 products

Fusion

Nagios Xi

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Nagios Fusion	Up to 4.1.8
Nagios Nagios Xi	Up to 5.7.5

Related CWEs

CWE-276

Incorrect Default Permissions

During installation, installed file permissions are set to allow anyone to modify those files.

References (6)

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

Source: cve@mitre.org

Third Party AdvisoryVDB Entry

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

Source: cve@mitre.org

Third Party Advisory

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

Source: cve@mitre.org

Release NotesVendor Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party AdvisoryVDB Entry

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Release NotesVendor Advisory

Timeline

No history available yet.