Description
Nagios XI versions prior to 5.5.7 contain a privilege escalation vulnerability in the MRTG graphing component. MRTG-related processes/scripts executed with excessive privileges, allowing a local attacker with limited system access to abuse file/command execution paths or writable resources to gain elevated privileges.
References (2)
Core 2
Core References
Release Notes release-notes
patch
https://www.nagios.com/changelog/nagios-xi/
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-mrtg-graphing-component
Scores
CVSS v3
7.8
EPSS
0.0028
EPSS Percentile
19.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-250
Status
published
Products (1)
nagios/nagios_xi
< 5.5.7
Published
Oct 30, 2025
Tracked Since
Feb 18, 2026