CVE-2025-54145: Mozilla Firefox

Critical severity, CVSS 9.1. EPSS: 0.4% chance of exploitation in the next 30 days.

The QR scanner could allow arbitrary websites to be opened if a user was tricked into scanning a malicious link that leveraged Firefox's open-text URL scheme. This vulnerability was fixed in Firefox for iOS 141.

Affected products

• Mozilla Firefox: before 141.0 (fixed in 141.0)

Published 2025-08-19. Last modified 2026-10-05.