What is CVE-2023-5554?

CVE-2023-5554 is a medium-severity vulnerability in Linecorp Line, classified under Improper Certificate Validation. CVSS score: 4.8/10. Published 2023-10-12.

How severe is CVE-2023-5554?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2023-5554 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linecorp Line

CVE-2023-5554

Lack of TLS certificate verification in log transmission of a financial module within LINE client for iOS prior to 13.16.0.

Vulnerability class: Improper Certificate Validation

EPSS: 0.002 (12.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Linecorp Line
Line Corporation Client For Ios — versions 13.12.0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

Public proof-of-concept exploits

References

dl_cve@linecorp.com (Permissions Required)

Frequently asked questions

What is CVE-2023-5554?: CVE-2023-5554 is a medium-severity vulnerability in Linecorp Line, classified under Improper Certificate Validation. CVSS score: 4.8/10. Published 2023-10-12.
How severe is CVE-2023-5554?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2023-5554 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.