---
id: CVE-2025-62583
title: >-
  Whale Browser before 4.33.325.17 allows an attacker to escape the iframe
  sandbox in a dual-tab environment.
summary: >-
  Whale Browser before 4.33.325.17 allows an attacker to escape the iframe
  sandbox in a dual-tab environment.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-358
vendor: navercorp
product: whale
affected:
  - whale < 4.33.325.17
patched:
  - whale 4.33.325.17
published: '2025-10-16'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-62583'
references:
  - url: 'https://cve.naver.com/detail/cve-2025-62583.html'
    label: cve@navercorp.com
tags:
  - nvd
epss: 0.00503
epssPercentile: 0.40679
ingestedAt: '2026-09-30T23:29:32.432Z'
---

## Overview

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

## Affected

- `whale < 4.33.325.17`

## Remediation

Upgrade past the affected range:

- `whale 4.33.325.17`