CVE-2026-119560
mediumOPNsense core through 26.7.8 contains a configuration injection vulnerability that allows authenticated users to append ntpd.conf directives by embedding newli…
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:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://abraxaslabs.tech/research/opnsense-ntp-gps-fudge disclosure@vulncheck.com
- https://github.com/opnsense/core disclosure@vulncheck.com
- https://github.com/opnsense/core/blob/26.7.8/src/etc/inc/plugins.inc.d/ntpd.inc#L285-L312 disclosure@vulncheck.com
- https://github.com/opnsense/core/blob/26.7.8/src/www/services_ntpd_gps.php#L49 disclosure@vulncheck.com
- https://github.com/opnsense/core/security/advisories/GHSA-fq94-cxvc-9r7w disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/opnsense-core-through-26.7.8-ntp-configuration-inject... disclosure@vulncheck.com