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HIGH 7.5

CVE-2026-4727

Denial-of-service in the Libraries component in NSS. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

CVSS v3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS 0.0% percentile 4.8%

Affected tracked apps

Vulnerable CPE configurations

Vendor Product Platform Versions CPE 2.3 URI
mozilla thunderbird Windows <149.0 cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
View on NVD ↗