{"action":"Upgrade firefox-esr to 128.7.0esr-1 or later.","affected":[{"fixed":"128.7.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["128.7.0esr-1"],"id":"tcs_01M5NMTBEBKBF066812DP8D587","modified_at":"2026-10-06T09:47:25.189534190Z","published_at":"2025-02-04T14:15:32Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-1012","https://security-tracker.debian.org/tracker/CVE-2025-1012"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-1012#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-1012"}],"summary":"A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135."}