CVE-2026-16404: Mozilla Firefox Mobile

High severity, CVSS 7.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Spoofing issue in Firefox for Android. This vulnerability was fixed in Firefox 153.

Affected products

• Mozilla Firefox Mobile: before 153.0 (fixed in 153.0)

Published 2026-07-21. Last modified 2026-07-24.