CVE record
CVE-2026-8959
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
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Hardware security keys
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Vulnerability metadata
- Published
- 2026-05-19T08:46:52.280Z
- Modified
- 2026-05-20T08:58:29.307Z
- EPSS
- Not available
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Recommended platforms
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Security engineering books
Browse practical security, incident response, cloud security, and secure coding books for team learning.
Cloud security platform
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