High 8.5Published Oct 30, 2025

CVE-2018-25123Nagios XI < 5.5.7 Privilege Escalation via MRTG Graphing Component

Updated under an hour ago (Oct 26, 2026, 2:50 AM ET)

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It affects Nagios XI and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Nagios XI

Exploited in the last 30 days

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.

CVSS: 8.5 HIGH (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-250
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Nov 17, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Nagios XI nagios:xi (from the name)	before 5.5.7	CNA record
nagios nagios_xi nagios:nagios_xi	before 5.5.7	NVD

References

https://www.nagios.com/changelog/nagios-xi/release-notes, patch
https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-mrtg-graphing-componentthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.