BaseFortify

Publication date: 2025-12-15

Last updated on: 2025-12-18

Assigner: LINE Corporation

Description

The in-app browser in LINE client for iOS versions prior to 14.14 is vulnerable to address bar spoofing, which could allow attackers to execute malicious JavaScript within iframes while displaying trusted URLs, enabling phishing attacks through overlaid malicious content.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-12-15

Last Modified

2025-12-18

Generated

2026-07-06

AI Q&A

2025-12-15

EPSS Evaluated

2026-07-05

NVD

CVE-2025-14021

EUVD

EUVD-2025-203345

Affected Vendors & Products

Vendor	Product	Version / Range
linecorp	line	to 14.14.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-451	The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.

Attack-Flow Graph

Executive Summary

The vulnerability is in the in-app browser of the LINE client for iOS versions before 14.14. It allows attackers to spoof the address bar by executing malicious JavaScript within iframes while showing trusted URLs. This can trick users into believing they are visiting a legitimate site, enabling phishing attacks through malicious content overlays.

Impact Analysis

This vulnerability can lead to phishing attacks by misleading users into trusting malicious content that appears to come from a legitimate source. Attackers can execute malicious scripts to steal sensitive information or perform other harmful actions without the user's knowledge.

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