LINE Client up to 14.19 on Android Notifications clickjacking

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in LINE Client up to 14.19 on Android. It has been classified as critical. This issue affects some unknown processing of the component Notifications Handler. This manipulation causes Remote Code Execution. The identification of this vulnerability is CVE-2025-14020. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in LINE Client up to 14.19 on Android. Affected by this vulnerability is an unknown code block of the component Notifications Handler. The manipulation with an unknown input leads to a remote code execution vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at hackerone.com. This vulnerability is known as CVE-2025-14020 since 12/04/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1566.003 according to MITRE ATT&CK.

Upgrading to version 14.20 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-203348). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (LY-Corporation): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Clickjacking
CWE: CWE-451
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: LINE Client 14.20

Timelineinfo

12/04/2025 CVE reserved
12/15/2025 +11 days Advisory disclosed
12/15/2025 +0 days VulDB entry created
12/16/2025 +1 days VulDB entry last update

Sourcesinfo

Advisory: hackerone.com
Status: Confirmed

CVE: CVE-2025-14020 (🔒)
GCVE (CVE): GCVE-0-2025-14020
GCVE (VulDB): GCVE-100-336439
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 12/15/2025 09:18
Updated: 12/16/2025 06:54
Changes: 12/15/2025 09:18 (63), 12/15/2025 10:45 (1), 12/16/2025 06:54 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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