Is CVE-2018-13434 actively exploited?

No active exploitation of CVE-2018-13434 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-13434 be exploited remotely?

No. CVE-2018-13434 requires physical access to exploit.

What is the CVSS score of CVE-2018-13434?

CVE-2018-13434 has a CVSS score of 6.3 (MEDIUM).

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MEDIUM

CVE-2018-13434

CWE-287Published: August 16, 2018· Updated: Jun 17, 2026

6.3

CVSS v3.1

Official Description

An issue was discovered in the LINE jp.naver.line application 8.8.0 for iOS. The LAContext class for Biometric (TouchID) validation allows authentication bypass by overriding the LAContext return Boolean value to be "true" because the kSecAccessControlUserPresence protection mechanism is not used. In other words, an attacker could authenticate with an arbitrary fingerprint. NOTE: the vendor indicates that this is not an attack of interest within the context of their threat model, which excludes iOS devices on which a jailbreak has occurred

NVD Source

Technical Analysis

CVE-2018-13434 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.3.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.