VULNERABILITY INTELLIGENCE

CVE-2021-25299

CVSS score6.1 MEDIUM

EPSS probability97.76%

CISA KEVNot currently listed

Published2021-02-15

Last modified2026-07-09

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Weakness classification

nvd@nist.gov: CWE-79

Primary references

cve@mitre.org — Exploit, Third Party Advisory, VDB Entry
cve@mitre.org — Product
cve@mitre.org — Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Product
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory