CVE-2026-2788
Critical
Description
Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Mozilla Firefox
PublishedFeb 24, 2026
First seenFeb 24, 2026
Weakness typeCWE-119Memory buffer bounds error
How to fix
Update
- mozilla firefox115.33.0, 148.0, 140.8.0 or later
- mozilla thunderbird140.8.0, 148.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 115.33.0, v < 148.0, 128.0 ≤ v < 140.8.0 | 115.33.0, 148.0, 140.8.0 |
| mozilla thunderbird | v < 140.8.0, v < 148.0 | 140.8.0, 148.0 |
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