{"action":"Upgrade wireshark to 3.4.11-r0 or later.","affected":[{"fixed":"3.4.11-r0","introduced":"3.4.0"}],"component":"wireshark","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.20","exploited":false,"fixed_versions":["3.4.11-r0"],"id":"tcs_01M6GZ1427T6281GKWEXPZW32H","modified_at":"2026-11-03T06:32:47.846062075Z","published_at":"2021-11-18T19:15:08.333Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-39920","https://security.alpinelinux.org/vuln/CVE-2021-39920"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-39920#Alpine:v3.20/wireshark","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-39920"}],"summary":"NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file"}