{"action":"Upgrade exim to 4.94.2-r0 or later.","affected":[{"fixed":"4.94.2-r0","introduced":"4.00"}],"component":"exim","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.22","exploited":false,"fixed_versions":["4.94.2-r0"],"id":"tcs_01M6GYACP5SH3VGTGX1DZPB4AQ","modified_at":"2026-11-03T06:32:46.014857011Z","published_at":"2021-05-06T13:15:09.720Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2020-28024","https://security.alpinelinux.org/vuln/CVE-2020-28024"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2020-28024#Alpine:v3.22/exim","url":"https://osv.dev/vulnerability/ALPINE-CVE-2020-28024"}],"summary":"Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can a"}