{"action":"Upgrade firefox-esr to 140.14.0esr-2 or later.","affected":[{"fixed":"140.14.0esr-2","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["140.14.0esr-2"],"id":"tcs_01M5NVC0HTM8BG5FFG569VWTYM","modified_at":"2026-10-01T03:03:41.921366746Z","published_at":"2026-08-18T13:17:40.930Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-74990","https://security-tracker.debian.org/tracker/CVE-2026-74990"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-74990#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-74990"}],"summary":"Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we p"}