Iframe Sandbox Escape Vulnerability in Whale Browser by Naver
CVE-2025-69234

9.1CRITICAL

Key Information:

Vendor

Naver

Status
Naver Whale Browser
Vendor
CVE Published:
30 December 2025

What is CVE-2025-69234?

Whale browser versions before 4.35.351.12 are susceptible to a vulnerability that allows attackers to escape the iframe sandbox in a sidebar setting. This could potentially enable malicious actions that compromise user data and system integrity. Users are advised to update to the latest version to mitigate risks associated with this security issue.

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Deploy the Patch

Affected Version(s)

NAVER Whale browser Windows 4.35.351.12

References

https://cve.naver.com/detail/cve-2025-69234.html
vendor-advisory

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mingi Jung, wjdaslrl4475@unist.ac.kr, Ulsan National Institute of Science and Technology - WebSecLab
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