{"action":"Upgrade ntp to 1:4.2.8p7+dfsg-1 or later.","affected":[{"fixed":"1:4.2.8p7+dfsg-1","introduced":"0"}],"component":"ntp","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:11","exploited":false,"fixed_versions":["1:4.2.8p7+dfsg-1"],"id":"tcs_01M5NBFJGSX8MSAJ8Z6H9VG0CG","modified_at":"2026-08-04T06:00:45.559995728Z","published_at":"2017-01-06T21:59:00.353Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2016-1548","https://security-tracker.debian.org/tracker/CVE-2016-1548"],"severity":{"label":"high","score":7.2},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2016-1548","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2016-1548"}],"summary":"An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4"}