CVE-2021-36216

Local code execution via uncontrolled DLL search

Published Sep 8, 2021 · Updated Aug 4, 2024

DLL search-path hijacking in LY Corporation LINE for Windows 6.2.1.2289 and earlier allows local users to execute arbitrary code. The application loads a malicious DLL through an uncontrolled search path, but public material does not identify the executable, DLL name, or searched directory. Exploitation requires low-privileged local access and runs attacker code in the affected application's security context.

CVSS severity7.8
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DLL search-path hijacking in LY Corporation LINE for Windows 6.2.1.2289 and earlier allows local users to execute arbitrary code. The application loads a malicious DLL through an uncontrolled search path, but public material does not identify the executable, DLL name, or searched directory. Exploitation requires low-privileged local access and runs attacker code in the affected application's security context.

The record

CVE
CVE-2021-36216
Published
Sep 8, 2021
Updated
Aug 4, 2024
Vendor
LY Corporation
Product
LINE for Windows
Classifications
CWE-427, T1574.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<=

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

LY Corporation · LINE for Windowsversion=<=

Published CVSS scores

4.6NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574.001DLL Search Order Hijacking

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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