CVE-2023-6864
High
Description
Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5. 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 < 115.6, Thunderbird < 115.6, and Firefox < 121.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Mozilla Firefox
PublishedDec 19, 2023
First seenDec 19, 2023
How to fix
Update
- mozilla firefox121.0 or later
- mozilla firefox_esr115.6 or later
- mozilla thunderbird115.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 121.0 | 121.0 |
| mozilla firefox_esr | v < 115.6 | 115.6 |
| mozilla thunderbird | v < 115.6 | 115.6 |
| debian debian_linux | 10.0, 11.0, 12.0 | — |
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