Sender Spoofing via Malformed From Header in Thunderbird. (CVE-2025-3875) Unsolicited File Download, Disk Space Exhaustion, and Credential Leakage via mailbox:/// Links. (CVE-2025-3877) JavaScript Execution via Spoofed PDF Attachment and file:/// Link. (CVE-2025-3909) Tracking Links in Attachments Bypassed Remote Content Blocking. (CVE-2025-3932) Out-of-bounds access when resolving Promise objects. (CVE-2025-4918) Out-of-bounds access when optimizing linear sums. (CVE-2025-4919)