CVE-2020-15656
High
Description
JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedAug 10, 2020
First seenAug 10, 2020
How to fix
Update
- mozilla firefox79.0 or later
- mozilla firefox_esr78.1 or later
- mozilla thunderbird78.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 79.0 | 79.0 |
| mozilla firefox_esr | v < 78.1 | 78.1 |
| mozilla thunderbird | v < 78.1 | 78.1 |
| opensuse leap | 15.2 | — |
| canonical ubuntu_linux | 16.04, 18.04, 20.04 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.