{"action":"Upgrade kamailio to 5.4.2-1 or later.","affected":[{"fixed":"5.4.2-1","introduced":"0"}],"component":"kamailio","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["5.4.2-1"],"id":"tcs_01M5NEY3Y3R4JBGCDFGZMDBEXD","modified_at":"2026-09-11T11:02:31.837551754Z","published_at":"2023-03-15T20:15:10.283Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-27507","https://security-tracker.debian.org/tracker/CVE-2020-27507"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-27507#Debian:14/kamailio","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-27507"}],"summary":"The Kamailio SIP before 5.5.0 server mishandles INVITE requests with duplicated fields and overlength tag, leading to a buffer overflow that crashes the server or possibly have unspecified other impac"}