{"action":"Upgrade zeromq3 to 4.3.3-1 or later.","affected":[{"fixed":"4.3.3-1","introduced":"0"}],"component":"zeromq3","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["4.3.3-1"],"id":"tcs_01M5NFB0X0EPJM1EX5VNYBHA2H","modified_at":"2026-10-23T18:04:48.840746131Z","published_at":"2021-04-01T14:15:13.217Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-20235","https://security-tracker.debian.org/tracker/CVE-2021-20235"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-20235","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-20235"}],"summary":"There's a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a s"}