Mozilla Thunderbird (en-US) 138.0.1
Mozilla Thunderbird (en-US) 138.0.1, released May 13, 2025, fixes 3 CVEs in Mozilla Thunderbird (en-US). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Thunderbird (en-US) is 159.0, which also fixes every one of these CVEs.
Superseded. The latest Mozilla Thunderbird (en-US) is 159.0, which also fixes every CVE on this page. Install that instead.
Priority of the 3 CVEs
Applies to
| Product | Version |
|---|---|
| Mozilla Thunderbird (en-US) | 138.0.1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2025-3909 | JavaScript Execution via Spoofed PDF Attachment and file:/// Link | 8.8 | 0.0047 | None reported |
| High | CVE-2025-3875 | Sender Spoofing via Malformed From Header in Thunderbird | 8.8 | 0.0040 | None reported |
| High | CVE-2025-3932 | Tracking Links in Attachments Bypassed Remote Content Blocking | 8.8 | 0.0039 | None reported |
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