{"action":"Upgrade thunderbird to 1:128.12.0esr-1~deb12u1 or later.","affected":[{"fixed":"1:128.12.0esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:128.12.0esr-1~deb12u1"],"id":"tcs_01M5NP5SBSCWD6W7MDSXG52M7M","modified_at":"2026-10-24T09:47:33.617089029Z","published_at":"2025-06-24T13:15:23.273Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-6424","https://security-tracker.debian.org/tracker/CVE-2025-6424"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-6424#Debian:12/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-6424"}],"summary":"A use-after-free in FontFaceSet resulted in a potentially exploitable crash. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.1"}