CVE-2020-26960
High
Description
If the Compact() method was called on an nsTArray, the array could have been reallocated without updating other pointers, leading to a potential use-after-free and exploitable crash. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
SeverityHigh
CVSS8.8
Exploit probability75. percentile1.6%
Product
Mozilla Firefox
PublishedDec 9, 2020
First seenDec 9, 2020
How to fix
Update
- mozilla firefox83.0 or later
- mozilla firefox_esr78.5 or later
- mozilla thunderbird78.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 83.0 | 83.0 |
| mozilla firefox_esr | v < 78.5 | 78.5 |
| mozilla thunderbird | v < 78.5 | 78.5 |
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