CVE-2026-8945

Sandbox escape in Firefox and Firefox Focus for Android

Published May 19, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mozilla firefox Focus
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox_focus:*:*:*:*:*:android:*:*
Vendors & Products Mozilla firefox Focus
Type Values Removed Values Added
Weaknesses CWE-250
CWE-285
Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Weaknesses CWE-250
CWE-285
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Description Sandbox escape in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 151.
Title Sandbox escape in Firefox and Firefox Focus for Android
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Jul 15, 2026, 12:39 AM
Reserved
May 19, 2026, 12:29 PM
Status
Modified
Published
May 19, 2026, 2:16 PM
Modified
Oct 14, 2026, 8:10 PM