CVE-2026-103665 Yamaha LAN Monitor - Remote Code Execution & Privilege Escalation

Yamaha LAN Monitor for Windows contains a DLL hijacking vulnerability caused by insecure loading of DLLs during installation, letting attackers execute arbitrary code with administrative privileges when a crafted DLL is present.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.19% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, Privilege Escalation
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
29 October 2026
Updated
31 October 2026
Weakness
CWE-427

Vendor fix

Update to the latest version with secure DLL loading or apply vendor patches.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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