CVE-2019-9820
Critical
Description
A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedJul 23, 2019
First seenJul 23, 2019
How to fix
Update
- mozilla firefox67.0 or later
- mozilla firefox_esr60.7 or later
- mozilla thunderbird60.7.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 67.0 | 67.0 |
| mozilla firefox_esr | v < 60.7 | 60.7 |
| mozilla thunderbird | v < 60.7.0 | 60.7.0 |
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