{"action":"Upgrade exim4 to 4.94.2-1 or later.","affected":[{"fixed":"4.94.2-1","introduced":"0"}],"component":"exim4","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.94.2-1"],"id":"tcs_01M5NEZBNYX03GAEMQ8XVARABE","modified_at":"2026-10-26T12:02:42.614126190Z","published_at":"2021-05-06T13:15:09.667Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2020-28022","https://security-tracker.debian.org/tracker/CVE-2020-28022"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2020-28022#Debian:13/exim4","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2020-28022"}],"summary":"Exim 4 before 4.94.2 has Improper Restriction of Write Operations within the Bounds of a Memory Buffer. This occurs when processing name=value pairs within MAIL FROM and RCPT TO commands."}