{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"libesmtp","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NE3WVTYCFQFG2G0FT2Y9N1","modified_at":"2026-09-21T07:03:17.373400471Z","published_at":"2019-12-26T01:15:10.973Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-19977","https://security-tracker.debian.org/tracker/CVE-2019-19977"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-19977","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-19977"}],"summary":"libESMTP through 1.0.6 mishandles domain copying into a fixed-size buffer in ntlm_build_type_2 in ntlm/ntlmstruct.c, as demonstrated by a stack-based buffer over-read."}