CVE-2021-25299

MEDIUM NUCLEI

Nagios XI 5.7.5 - Stored Cross-Site Scripting in SSH Terminal Admin Page

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-25299 has a Nuclei detection template available — see the Nuclei card below for the Shodan/FOFA recon queries.

Description

Nagios XI version xi-5.7.5 is affected by cross-site scripting (XSS). The vulnerability exists in the file /usr/local/nagiosxi/html/admin/sshterm.php due to improper sanitization of user-controlled input. A maliciously crafted URL, when clicked by an admin user, can be used to steal his/her session cookies or it can be chained with the previous bugs to get one-click remote command execution (RCE) on the Nagios XI server.

Nuclei Templates (1)

Nagios XI 5.7.5 - Cross-Site Scripting
MEDIUMVERIFIEDby ritikchaddha
Shodan: title:"Nagios XI" || http.title:"nagios xi"
FOFA: title="nagios xi" || app="nagios-xi"

References (4)

Core 4
Core References
Product x_refsource_misc
http://nagios.com
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html

Scores

CVSS v3 6.1
EPSS 0.9686
EPSS Percentile 99.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
nagios/nagios_xi 5.7.5
Published Feb 15, 2021
Tracked Since Feb 18, 2026