Multiple Vulnerabilities Discovered in Mozilla Thunderbird

📌 Multiple vulnerabilities were discovered in Mozilla Thunderbird on May 4, 2026, as reported by the French government’s CERT (CERT-FR). These flaws enable attackers to execute arbitrary remote code, compromise data confidentiality, and bypass security policies. No specific CVE identifiers, affected version numbers, or technical exploitation details were provided in the notice. The vulnerabilities were disclosed in an advisory labeled CERTFR-2026-AVI-0529. The impacts include unauthorized code execution, data exposure, and security mechanism circumvention.