CVE-2026-120572
High
Description
Incorrect boundary conditions in the Layout: Block and Inline component. This vulnerability was fixed in Firefox 159.0.1.
SeverityHigh
CVSS8.8
Exploit probability—
ProductFirefox
PublishedNov 3, 2026
First seenNov 4, 2026
Weakness typeCWE-119Memory buffer bounds error
How to fix
Update
- Firefox159.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox | No range specified | 159.0.1 |
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