CVE-2026-100805
High
Description
Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Mozilla Firefox
PublishedSep 29, 2026
First seenSep 29, 2026
Weakness typeCWE-362Race conditionCWE-416Use after free
How to fix
Update
- mozilla firefox157.0.0 or later
- mozilla thunderbird157.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 157.0.0 | 157.0.0 |
| mozilla thunderbird | v < 157.0 | 157.0 |
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