8.1
High
CVE-2026-12326 Memory safety bugs present in Firefox 151 and Thunderbird 151
Description
Memory safety bugs present in Firefox 151 and Thunderbird 151. 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 was fixed in Firefox 152 and Thunderbird 152.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 152 | earliest → < 152 | 152 |
| Thunderbird 152 | earliest → < 152 | 152 |
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published |
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