{"action":"Upgrade exim4 to 4.89-12 or later.","affected":[{"fixed":"4.89-12","introduced":"0"}],"component":"exim4","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["4.89-12"],"id":"tcs_01M5NC8S30XRV684WH23KGE9M0","modified_at":"2026-09-01T20:03:45.373290917Z","published_at":"2017-11-25T17:29:00.260Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-16943","https://security-tracker.debian.org/tracker/CVE-2017-16943"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-16943","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-16943"}],"summary":"The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDA"}