Mozilla Thunderbird (rm) 137.0
Mozilla Thunderbird (rm) 137.0, released April 1, 2025, fixes 5 CVEs in Mozilla Thunderbird (rm). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Thunderbird (rm) is 159.0, which also fixes every one of these CVEs.
Superseded. The latest Mozilla Thunderbird (rm) is 159.0, which also fixes every CVE on this page. Install that instead.
Priority of the 5 CVEs
Applies to
| Product | Version |
|---|---|
| Mozilla Thunderbird (rm) | 137.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2025-3034 | Memory safety bugs fixed in Firefox 137 and Thunderbird 137 | 8.1 | 0.0048 | None reported |
| High | CVE-2025-3032 | Leaking file descriptors from the fork server | 7.4 | 0.0040 | None reported |
| High | CVE-2025-3029 | URL Bar Spoofing via non-BMP Unicode characters | 8.8 | 0.0036 | None reported |
| High | CVE-2025-3033 | Opening local .url files could lead to another file being opened | 7.7 | 0.0017 | None reported |
| Routine | CVE-2025-3031 | JIT optimization bug with different stack slot sizes | 6.5 | 0.0030 | None reported |
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