CVE-2020-12395
Critical
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. 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 < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedMay 26, 2020
First seenMay 26, 2020
How to fix
Update
- mozilla firefox76.0 or later
- mozilla firefox_esr68.8.0 or later
- mozilla thunderbird68.8.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 76.0 | 76.0 |
| mozilla firefox_esr | v < 68.8.0 | 68.8.0 |
| mozilla thunderbird | v < 68.8.0 | 68.8.0 |
| canonical ubuntu_linux | 16.04, 18.04, 19.10, 20.04 | — |
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