Thunderbird ESR is a technology platform tracked across 2 threat clusters and 2 intelligence report mentions on ThreatCluster. First observed March 25, 2026; most recent activity April 14, 2026.
Multiple critical vulnerabilities have been identified in Firefox and Thunderbird, specifically CVE-2026-4720, CVE-2026-4710, and CVE-2026-4705, all published on March 24, 2026. These vulnerabilities involve memory…
On April 14 and 16, 2026, SUSE released important updates for Mozilla Firefox and Thunderbird addressing multiple memory safety vulnerabilities. The updates include fixes for CVE-2026-5731, CVE-2026-5732, and…