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.

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.003 (19.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-69234: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

References

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.