{"action":"Upgrade fastd to 21-1 or later.","affected":[{"fixed":"21-1","introduced":"0"}],"component":"fastd","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["21-1"],"id":"tcs_01M5NEY86QYH5MQAWDFJ4VP3XE","modified_at":"2026-10-26T12:02:31.152756146Z","published_at":"2020-10-22T13:15:15.613Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-27638","https://security-tracker.debian.org/tracker/CVE-2020-27638"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-27638","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-27638"}],"summary":"receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code."}