{"action":"Upgrade wireshark to 3.6.0-1 or later.","affected":[{"fixed":"3.6.0-1","introduced":"0"}],"component":"wireshark","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["3.6.0-1"],"id":"tcs_01M5NFYGP3QK47T92H56AFMN5S","modified_at":"2026-10-23T18:04:00.200868907Z","published_at":"2021-11-19T17:15:08.343Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-39921","https://security-tracker.debian.org/tracker/CVE-2021-39921"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-39921#Debian:14/wireshark","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-39921"}],"summary":"NULL pointer exception in the Modbus dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file"}