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Vulnerability IntelligenceCVE-2026-8963

CVE-2026-8963

HIGH7.5

Spoofing issue in the Web Speech component

Published May 19, 2026

Modified 2 weeks ago

Details

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

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2021222

https://www.cve.org/CVERecord?id=CVE-2026-8963

https://www.mozilla.org/security/advisories/mfsa2026-46/

https://www.mozilla.org/security/advisories/mfsa2026-50/

CVSS Analysis

CVSS v3.1

7.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

HighI:H

Availability

NoneA:N

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

Ecosystems

Timeline

PublishedMay 19, 2026

ModifiedMay 19, 2026

CVE-2026-8963 | Mondoo Vulnerability Intelligence