CVE-2024-7521
High
Description
Incomplete WebAssembly exception handing could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedAug 6, 2024
First seenAug 6, 2024
Weakness typeCWE-755CWE-755
How to fix
Update
- mozilla firefox129.0 or later
- mozilla firefox_esr115.14.0 or later
- mozilla thunderbird115.14.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 129.0 | 129.0 |
| mozilla firefox_esr | v < 115.14.0, 128.0 | 115.14.0 |
| mozilla thunderbird | v < 115.14.0, 128.0.1 | 115.14.0 |
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