CVE-2025-27426: Mozilla Firefox

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Malicious websites utilizing a server-side redirect to an internal error page could result in a spoofed website URL. This vulnerability was fixed in Firefox for iOS 136.

Affected products

• Mozilla Firefox: before 136.0 (fixed in 136.0)

Published 2025-03-04. Last modified 2026-06-17.