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TI-2018-15349 Aliases CVE-2018-25123GHSA-cg42-mqc9-9fhp

Nagios XI < 5.5.7 Privilege Escalation via MRTG Graphing Component

Priority LOW 39CWE-250Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-250.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00348 28th percentileScored 2026-11-07
Fix Fixed XI (Nagios): 5.5.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NagiosXIbefore 5.5.75.5.7Patch availableCNA
  • XI VendorNagios Affected before 5.5.7 Fixed in 5.5.7 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*before 5.5.7VulnerableNagios
  • cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:* Versions before 5.5.7 Vulnerable ·Nagios

Remediation

  • Fix · CNA XI (Nagios) Fixed in 5.5.7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-25123
  2. 2026-10-03 Alias added: GHSA-cg42-mqc9-9fhp

References

Patch 1

  • TI-2021-07545 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
  • TI-2021-07544 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
  • TI-2021-07543 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
  • TI-2019-11993 Nagios XI before 5.6.6 allows remote command execution as root. KEVCVSS 3.1HIGH 8.8
  • TI-2023-26027 Nagios XI before version 5.11.3 was discovered to contain a remote code execution (RCE)… CVSS 3.1CRITICAL 9.8
  • TI-2018-11196 Snoopy 1.0 in Nagios XI 5.5.6 allows remote unauthenticated attackers to execute… CVSS 3.0CRITICAL 9.8
See all 191 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences