CVE-2025-62583: Navercorp Whale

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Whale Browser before 4.33.325.17 allows an attacker to escape the iframe sandbox in a dual-tab environment.

Affected products

• Navercorp Whale: before 4.33.325.17 (fixed in 4.33.325.17)

Published 2025-10-16. Last modified 2026-10-08.