CVE-2026-8963: Vulnerability in Mozilla Firefox
Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
AI Analysis
Technical Summary
CVE-2026-8963 is a spoofing vulnerability affecting the Web Speech component in Mozilla Firefox. The flaw could allow an attacker to deceive users by presenting misleading information via the Web Speech interface. Mozilla fixed this vulnerability in Firefox 151 as part of a broader security update that addressed multiple vulnerabilities across different components. The vendor advisory classifies the impact of this specific issue as low and does not indicate active exploitation.
Potential Impact
The impact of CVE-2026-8963 is considered low, involving spoofing in the Web Speech component. Spoofing vulnerabilities can potentially mislead users but do not inherently allow code execution or privilege escalation. There are no known exploits in the wild targeting this vulnerability. The fix is included in Firefox 151, which mitigates the risk.
Mitigation Recommendations
Users and administrators should update Mozilla Firefox to version 151 or later to remediate this vulnerability. The vendor advisory confirms that the issue is fixed in Firefox 151. No additional mitigation actions are required beyond applying this update.
CVE-2026-8963: Vulnerability in Mozilla Firefox
Description
Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8963 is a spoofing vulnerability affecting the Web Speech component in Mozilla Firefox. The flaw could allow an attacker to deceive users by presenting misleading information via the Web Speech interface. Mozilla fixed this vulnerability in Firefox 151 as part of a broader security update that addressed multiple vulnerabilities across different components. The vendor advisory classifies the impact of this specific issue as low and does not indicate active exploitation.
Potential Impact
The impact of CVE-2026-8963 is considered low, involving spoofing in the Web Speech component. Spoofing vulnerabilities can potentially mislead users but do not inherently allow code execution or privilege escalation. There are no known exploits in the wild targeting this vulnerability. The fix is included in Firefox 151, which mitigates the risk.
Mitigation Recommendations
Users and administrators should update Mozilla Firefox to version 151 or later to remediate this vulnerability. The vendor advisory confirms that the issue is fixed in Firefox 151. No additional mitigation actions are required beyond applying this update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-05-19T12:30:03.895Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-46/","vendor":"Mozilla"}]
Threat ID: 6a0c677fec166c07b0a997fc
Added to database: 5/19/2026, 1:37:03 PM
Last enriched: 5/19/2026, 1:54:09 PM
Last updated: 5/20/2026, 3:18:42 PM
Views: 9
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