Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fix(es): * thunderbird: JavaScript Execution via Spoofed PDF Attachment and file:/// Link (CVE-2025-3909) * thunderbird: Sender Spoofing via Malformed From Header in Thunderbird (CVE-2025-3875) * thunderbird: Unsolicited File Download, Disk Space Exhaustion, and Credential Leakage via mailbox:/// Links (CVE-2025-3877) * thunderbird: Tracking Links in Attachments Bypassed Remote Content Blocking (CVE-2025-3932) * firefox: thunderbird: Out-of-bounds access when resolving Promise objects (CVE-2025-4918) * firefox: thunderbird: Out-of-bounds access when optimizing linear sums (CVE-2025-4919) * firefox: thunderbird: Clickjacking vulnerability could have led to leaking saved payment card details (CVE-2025-5267) * firefox: thunderbird: Potential local code execution in ?Copy as cURL? command (CVE-2025-5264) * firefox: thunderbird: Memory safety bugs (CVE-2025-5268) * firefox: thunderbird: Script element events leaked cross-origin resource status (CVE-2025-5266) * firefox: thunderbird: Error handling for script execution was incorrectly isolated from web content (CVE-2025-5263) * firefox: thunderbird: Memory safety bug (CVE-2025-5269) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.