CVE-2026-84135

Other issue in Firefox Focus for Android

Published Sep 1, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.

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
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mozilla firefox Mobile
Weaknesses CWE-20
CPEs cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:android:*:*
Vendors & Products Mozilla firefox Mobile
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Weaknesses CWE-200
Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Description Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.
Title Other issue in Firefox Focus for Android
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Sep 3, 2026, 5:24 PM
Reserved
Sep 1, 2026, 7:25 AM
Status
Modified
Published
Sep 1, 2026, 1:20 PM
Modified
Sep 3, 2026, 6:17 PM