{"action":"Upgrade thunderbird to 1:140.14.0esr-1~deb12u1 or later.","affected":[{"fixed":"1:140.14.0esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.14.0esr-1~deb12u1"],"id":"tcs_01M5NVC0NEJ2G1DQSAWE7KMV9Q","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:12/thunderbird","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"}