What is CVE-2026-103665?

CVE-2026-103665 is a high-severity vulnerability in Yamaha Corporation Lan Monitor For Windows, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2026-10-29.

How severe is CVE-2026-103665?

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

Vulnerability in Yamaha Corporation Lan Monitor For Windows

CVE-2026-103665

The installer for Yamaha LAN Monitor for Windows provided by Yamaha Corporation may insecurely load Dynamic Link Libraries (DLLs). When the installer is launched in a directory containing a specially crafted DLL file, the malicious DLL may be loaded, resulting in arbitrary code execution with administrative privileges.

Published 2026-10-29 · last modified 2026-10-29.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Yamaha Corporation Lan Monitor For Windows

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

Frequently asked questions

What is CVE-2026-103665?: CVE-2026-103665 is a high-severity vulnerability in Yamaha Corporation Lan Monitor For Windows, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2026-10-29.
How severe is CVE-2026-103665?: High severity. CVSS v3 base score is 7.8 out of 10.