This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-18321 →

DEBIAN-CVE-2026-18321

Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd

Original description

The description as published by the source.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Debian:12 ntpsec

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 ntpsec

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 ntpsec

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.5+dfsg-1"}]}]