Vulnerability Description
OPNsense core through 26.7.8 contains a configuration injection vulnerability that allows authenticated users to append ntpd.conf directives by embedding newlines in the fudge and refid fields. Attackers holding the page-services-ntp-gps or PPS privilege can submit CR/LF characters via services_ntpd_gps.php or services_ntpd_pps.php to inject directives loaded by ntpd running as root.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://abraxaslabs.tech/research/opnsense-ntp-gps-fudge
- https://github.com/opnsense/core
- https://github.com/opnsense/core/blob/26.7.8/src/etc/inc/plugins.inc.d/ntpd.inc#
- https://github.com/opnsense/core/blob/26.7.8/src/www/services_ntpd_gps.php#L49
- https://github.com/opnsense/core/security/advisories/GHSA-fq94-cxvc-9r7w
- https://www.vulncheck.com/advisories/opnsense-core-through-26.7.8-ntp-configurat
FAQ
What is CVE-2026-119560?
CVE-2026-119560 is a vulnerability with a CVSS score of 5.9 (MEDIUM). OPNsense core through 26.7.8 contains a configuration injection vulnerability that allows authenticated users to append ntpd.conf directives by embedding newlines in the fudge and refid fields. Attack...
How severe is CVE-2026-119560?
CVE-2026-119560 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119560?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.