CVE-2026-8963

7.5 highEPSS 0.3%

High (7.5) in mozilla. EPSS 0.3% chance of exploitation in the next 30 days.

Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Severity

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 23% of CVEs (scores of 2026-10-31)
CWE: CWE-290
Published: 2026-05-19
Modified: 2026-07-23
Record from: the NVD, synced 2026-10-19