CVE-2018-13434: An issue was discovered in the LINE jp.naver.line application 8.8.0 for iOS. The LAContext class for Biometric (TouchID)
infovulnerability
security
Summary
The LINE app version 8.8.0 for iOS had a flaw in how it checked fingerprints for login. An attacker could bypass fingerprint authentication (authentication bypass, where someone gains access without proper verification) by tricking the system into accepting any fingerprint, because the app didn't use proper security protections. However, the LINE company stated this flaw only matters on jailbroken iPhones (devices where the iOS security system has been compromised), which they don't consider a serious threat.
Vulnerability Details
CVSS Score
4.4
EPSS (30-day exploit probability)
EPSS: 0.1%
Classification
Attack SophisticationModerate
Original source: https://nvd.nist.gov/vuln/detail/CVE-2018-13434
First tracked: February 15, 2026 at 08:52 PM
Classified by LLM (prompt v3) · confidence: 95%