Vulnerability in Linecorp Line
CVE-2025-14022
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.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.002 (4.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Linecorp Line
- Line Corporation Client For iOS — versions 15.3
Weakness classification (CWE)
References
- hackerone.com/reports/2853445 (Permissions Required, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-14022?
- CVE-2025-14022 is a high-severity vulnerability in Linecorp Line, classified under Improper Certificate Validation. CVSS score: 7.7/10. Published 2025-12-15.
- How severe is CVE-2025-14022?
- High severity. CVSS v3 base score is 7.7 out of 10.