Firefox Developer Edition (en-US) 137.0
Firefox Developer Edition (en-US) 137.0, released March 12, 2025, fixes 8 CVEs in Firefox Developer Edition (en-US). None of them is reported as exploited. Patch Radar priority: Urgent. The latest Firefox Developer Edition (en-US) is 156.0, which also fixes every one of these CVEs.
Superseded. The latest Firefox Developer Edition (en-US) is 156.0, which also fixes every CVE on this page. Install that instead.
Priority of the 8 CVEs
Applies to
| Product | Version |
|---|---|
| Firefox Developer Edition (en-US) | 137.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2025-2857 | Incorrect handle could lead to sandbox escapes | 10.0 | 0.0198 | None reported |
| High | CVE-2025-3028 | Use-after-free triggered by XSLTProcessor | 8.8 | 0.0087 | None reported |
| 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 |
| Routine | CVE-2025-3035 | Tab title disclosure across pages when using AI chatbot | 5.3 | 0.0030 | None reported |
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