---
id: CVE-2025-14020
title: >-
  LINE client for Android versions prior to 14.20 contains a UI spoofing
  vulnerability in the in-app browser where the full-screen security Toast
  notification is not properly re-displayed when users return from another
  application, potenti…
summary: >-
  LINE client for Android versions prior to 14.20 contains a UI spoofing
  vulnerability in the in-app browser where the full-screen security Toast
  notification is not properly re-displayed when users return from another
  application, potenti…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-451
vendor: linecorp
product: line
affected:
  - line < 14.20.0
patched:
  - line 14.20.0
published: '2025-12-15'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T19:10:00.160'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-14020'
references:
  - url: 'https://hackerone.com/reports/2547989'
    label: dl_cve@linecorp.com
tags:
  - nvd
epss: 0.00178
epssPercentile: 0.06725
ingestedAt: '2026-10-07T19:44:15.681Z'
---

## Overview

LINE client for Android versions prior to 14.20 contains a UI spoofing vulnerability in the in-app browser where the full-screen security Toast notification is not properly re-displayed when users return from another application, potentially allowing attackers to conduct phishing attacks by impersonating legitimate interfaces.

## Affected

- `line < 14.20.0`

## Remediation

Upgrade past the affected range:

- `line 14.20.0`