CVE-2020-15683
Critical
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 affects Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedOct 22, 2020
First seenOct 22, 2020
How to fix
Update
- mozilla firefox82.0 or later
- mozilla firefox_esr78.4 or later
- mozilla thunderbird78.4 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 82.0 | 82.0 |
| mozilla firefox_esr | v < 78.4 | 78.4 |
| mozilla thunderbird | v < 78.4 | 78.4 |
| debian debian_linux | 9.0, 10.0 | — |
| opensuse leap | 15.1, 15.2 | — |
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