Vulnerability · Published Oct 29, 2026 · Assigned by jpcert
CVE-2026-103665
High 7.8
In plain English
A high-severity uncontrolled search path in Yamaha LAN Monitor for Windows from Yamaha Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 3.0)7.8High
Exploit odds (30 days)0.2%top 90.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Yamaha Corporation | Yamaha LAN Monitor for Windows | 0 – through Ver.1.9.3 |
Weakness: CWE-427 · Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H