TI-2025-12813 Aliases CVE-2025-14022 GHSA-85v2-6j9h-fhq9

Improper certificate validation in LINE client for iOS

LOW 35CWE-295Published 2025-12-15 · Updated 2026-01-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Spoofing
Confidentiality · integrity · availability: High · High · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-295.

Summary

LINE client for iOS prior to 15.4 allows man-in-the-middle attacks due to improper SSL/TLS certificate validation in an integrated financial SDK. The SDK interfered with the application's network processing, causing server certificate verification to be disabled for a significant portion of network traffic, which could allow a network-adjacent attacker to intercept or modify encrypted communications.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00162 5th percentileScored 2026-11-07

Fix Fixed LINE client for iOS (LINE Corporation): 15.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
LINE Corporation	LINE client for iOS	15.3 to before 15.4	15.4	Patch available	CNA

LINE client for iOS VendorLINE Corporation Affected 15.3 to before 15.4 Fixed in 15.4 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:linecorp:line::::::iphone_os::*	before 15.4.0	Vulnerable	Linecorp

cpe:2.3:a:linecorp:line:*:*:*:*:*:iphone_os:*:* Versions before 15.4.0 Vulnerable ·Linecorp

Remediation

Fix · CNA LINE client for iOS (LINE Corporation) Fixed in 15.4

Timeline

2026-10-02 Threatist record created from CVE-2025-14022
2026-10-03 Alias added: GHSA-85v2-6j9h-fhq9

References

Advisory 1

https://hackerone.com/reports/2853445

TI-2024-01613 Improper authentication in LINE Corporation Armeria CVSS 3.1CRITICAL 9.1
TI-2023-05112 Improper certificate validation in LINE client for iOS CVSS 3.1CRITICAL 9.8
TI-2024-01060 Cross-site scripting in LINE Corporation Central Dogma CVSS 3.1CRITICAL 9.3
TI-2023-19873 Paths contain matrix variables bypass decorators CVSS 3.1HIGH 7.5
TI-2022-19973 LINE client for iOS before 12.17.0 might be crashed by sharing an invalid shared key of e2ee in group chat. CVSS 3.1HIGH 7.5
TI-2021-15992 Missing authorization in LINE Corporation Central Dogma CVSS 3.1HIGH 8.8

See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences