{"action":"Upgrade firefox-esr to 128.7.0esr-1~deb12u1 or later.","affected":[{"fixed":"128.7.0esr-1~deb12u1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["128.7.0esr-1~deb12u1"],"id":"tcs_01M5NMT973AHMCFMVX229MMBAX","modified_at":"2026-10-06T09:47:23.682133611Z","published_at":"2025-02-04T14:15:31.653Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-1009","https://security-tracker.debian.org/tracker/CVE-2025-1009"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-1009","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-1009"}],"summary":"An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Th"}