Vulnerability in Naver Whale Browser

CVE-2025-69234

Whale browser before 4.35.351.12 allows an attacker to escape the iframe sandbox in a sidebar environment.

EPSS: 0.003 (16.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Naver Whale Browser — versions 4.35.351.12
Navercorp Whale

Weakness classification (CWE)

CWE-358

References

cve@navercorp.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-69234?: CVE-2025-69234 is a critical-severity vulnerability in Naver Whale Browser, classified under CWE-358. CVSS score: 9.1/10. Published 2025-12-30.
How severe is CVE-2025-69234?: Critical severity. CVSS v3 base score is 9.1 out of 10.