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… (CVE-2026-13133)
A vulnerability exists in LineInst.exe (LINE for Windows) versions prior to 26.4.0 where Msftedit.dll is loaded using a relative path. This insecure DLL search path allows a malicious DLL placed in the installer's directory to be loaded instead of the legitimate system DLL. The vulnerability is classified as high severity due to the potential for malicious code execution. No official patch or remediation details are provided in the available data. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
The vulnerability in LineInst.exe affects versions before 26.4.0 and involves loading Msftedit.dll via a relative path without a secure DLL search path. This allows a malicious DLL placed in the installer's directory to be loaded ahead of the legitimate System32 version, potentially leading to code execution or privilege escalation under certain conditions. The CVSS 4.0 vector indicates local attack vector with low complexity, no privileges required, user interaction needed, and high impact on confidentiality, integrity, and availability.
Potential Impact
An attacker with local access and the ability to trick a user into interacting with the installer directory could execute arbitrary code by placing a malicious Msftedit.dll that is loaded instead of the legitimate system DLL. This could compromise the system's confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade LINE for Windows to version 26.4.0 or later where this DLL loading issue is fixed. Since no official patch link or advisory is provided, users should verify with the vendor for the availability of an official fix. Until patched, avoid running the installer from untrusted directories and do not place untrusted DLLs in the installer's directory.
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… (CVE-2026-13133)
Description
A vulnerability exists in LineInst.exe (LINE for Windows) versions prior to 26.4.0 where Msftedit.dll is loaded using a relative path. This insecure DLL search path allows a malicious DLL placed in the installer's directory to be loaded instead of the legitimate system DLL. The vulnerability is classified as high severity due to the potential for malicious code execution. No official patch or remediation details are provided in the available data. There are no known exploits in the wild at this time.
CVSS v4.0
Affected software
pkg:github/linecorp/line-for-windowsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in LineInst.exe affects versions before 26.4.0 and involves loading Msftedit.dll via a relative path without a secure DLL search path. This allows a malicious DLL placed in the installer's directory to be loaded ahead of the legitimate System32 version, potentially leading to code execution or privilege escalation under certain conditions. The CVSS 4.0 vector indicates local attack vector with low complexity, no privileges required, user interaction needed, and high impact on confidentiality, integrity, and availability.
Potential Impact
An attacker with local access and the ability to trick a user into interacting with the installer directory could execute arbitrary code by placing a malicious Msftedit.dll that is loaded instead of the legitimate system DLL. This could compromise the system's confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade LINE for Windows to version 26.4.0 or later where this DLL loading issue is fixed. Since no official patch link or advisory is provided, users should verify with the vendor for the availability of an official fix. Until patched, avoid running the installer from untrusted directories and do not place untrusted DLLs in the installer's directory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-w99c-x9xf-3prr
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-13133"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 4.0
Threat ID: 6a79f0e6bf8831d539f631ca
Added to database: 08/10/2026, 15:40:22 UTC
Last enriched: 08/10/2026, 16:05:50 UTC
Last updated: 08/10/2026, 17:40:59 UTC
Views: 3
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