Hi,

The following vulnerability was published for ntpsec.

CVE-2026-18321[0]:
| Buffer overflow in NTPsec's Zyfer refclock allows local attacker to
| crash ntpd


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-18321
https://www.cve.org/CVERecord?id=CVE-2026-18321
[1] https://gitlab.com/NTPsec/ntpsec/-/work_items/890
[2] https://gitlab.com/NTPsec/ntpsec/-/commit/28255fe0fac1cc562ddcbe17da9460dba180a40e

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore