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

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.002 (10.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-5554: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

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.