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CVE-2025-6436
Published: Jun 24, 2025
Modified: Apr 13, 2026
PUBLISHED
Description
Memory safety bugs present in Firefox 139 and Thunderbird 139. 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 140 and Thunderbird 140.
| Vendor | Product | Versions |
|---|---|---|
Mozilla | Firefox | unaffected 140 - <= * |
Mozilla | Thunderbird | unaffected 140 - <= * |
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