critical9.8
CVE-2025-0247
Memory safety bugs present in Firefox 133 and Thunderbird 133.
Impact
Memory safety bugs present in Firefox 133 and Thunderbird 133. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 134 and Thunderbird 134.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 134.0 |
| Mozilla | Thunderbird | before 134.0 |