CVE-2026-84135

9.8 criticalEPSS 0.4%

Critical (9.8) in mozilla firefox mobile. EPSS 0.4% chance of exploitation in the next 30 days.

Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.

Severity

9.8 critical

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)
CWEs: CWE-20, CWE-200
Published: 2026-09-01
Modified: 2026-09-03
Record from: the NVD, synced 2026-10-19