Read the docs
TI-2018-09674 Aliases CVE-2018-13457GHSA-6rvq-8cg9-gm39

qh_echo in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference…

Priority LOW 32CWE-476Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Will not fix Red Hat: no fix planned

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

qh_echo in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.

Why it matters now

EPSS 0.04453 91st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix Will not fix Red Hat: no fix planned

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nagios:nagios_core:*:*:*:*:*:*:*:*up to 4.4.1VulnerableNagios
  • cpe:2.3:a:nagios:nagios_core:*:*:*:*:*:*:*:* Versions up to 4.4.1 Vulnerable ·Nagios

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Mobile Application Platform 4AffectedNo fix planned: Out of support scope
Not affected: 1 product
  • Red Hat Storage 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-13457
  2. 2026-10-03 Alias added: GHSA-6rvq-8cg9-gm39

References

Exploit 2

Advisory 4

  • TI-2020-17925 Nagios Core application version 4.2.4 is vulnerable to Site-Wide Cross-Site Request… CVSS 3.1HIGH 8.8
  • TI-2017-10432 Nagios Core through 4.3.4 initially executes /usr/sbin/nagios as root but supports… CVSS 3.0HIGH 7.8
  • TI-2018-09675 qh_core in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference… CVSS 3.0MEDIUM 5.5
  • TI-2018-12893 Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as… CVSS 3.0MEDIUM 5.4

Sources

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