{"action":"Upgrade neutron to 2:17.1.1-5 or later.","affected":[{"fixed":"2:17.1.1-5","introduced":"0"}],"component":"neutron","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2:17.1.1-5"],"id":"tcs_01M5NFB7S85VHMXC684BAJ7FJF","modified_at":"2026-10-23T18:02:41.032859108Z","published_at":"2021-05-28T19:15:07.483Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-20267","https://security-tracker.debian.org/tracker/CVE-2021-20267"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-20267","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-20267"}],"summary":"A flaw was found in openstack-neutron's default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonat"}