CVE-2026-6767
Medium
Description
Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Mozilla Firefox
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-119Memory buffer bounds error
How to fix
Update
- mozilla firefox115.35.0, 150.0, 140.10.0 or later
- mozilla thunderbird140.10.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 115.35.0, v < 150.0, 140.0 ≤ v < 140.10.0 | 115.35.0, 150.0, 140.10.0 |
| mozilla thunderbird | 140.0 ≤ v < 140.10.0 | 140.10.0 |
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