CVE-2026-13133 | BDVDB-2026-356559 Detail

LYLINE for Windows

Description#

A vulnerability has been identified in LineInst.exe (LINE for Windows) prior to version 26.4.0, where Msftedit.dll is loaded via a relative path without a secure DLL search path, allowing a malicious DLL placed in the installer's directory to be loaded ahead of the legitimate System32 copy.

Impact#

Per CVSS v4.0: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-427

References#

https://line.github.io/security-advisory-blog/CVE-2026-13133/

Exploit#

No public exploit known

History#

Version 12026-08-10Record published in the CVE List.

Published

Published: 2026-08-10
Last modified: 2026-08-10

Vendor information

Vendor: LY
Product: LINE for Windows

All LY vulnerabilities

Score

8.4 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 6.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Not stated
Fixed
26.4.0

Scoring System

CVSS v4.0

8.4 High

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Attack Requirements	None
Privileges Required	None
User Interaction	Active
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).