What is CVE-2021-36216?

CVE-2021-36216 is a high-severity vulnerability in Linecorp Line, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-09-08.

How severe is CVE-2021-36216?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Linecorp Line

CVE-2021-36216

LINE for Windows 6.2.1.2289 and before allows arbitrary code execution via malicious DLL injection.

Published 2021-09-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linecorp Line
Line Corporation For Windows — versions <=

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

hackerone.com/reports/950688 (Permissions Required)

Frequently asked questions

What is CVE-2021-36216?: CVE-2021-36216 is a high-severity vulnerability in Linecorp Line, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-09-08.
How severe is CVE-2021-36216?: High severity. CVSS v3 base score is 7.8 out of 10.