CVE-2026-103665: Yamaha LAN Monitor for Windows · Uncontrolled Search Path Element
Affects Yamaha LAN Monitor for WindowsSource CVE Database V5
Not known to be exploited · CVSS 7.8 High.
Data as of 29 Oct 2026, 12:02 UTC
Thin evidence
One scorer or none| CNA (jpcert) | CVSS 3.0 | 7.8 |
|---|---|---|
| CNA (jpcert) | CVSS 4.0 | 8.4 |
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 29 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Yamaha CorporationYamaha LAN Monitor for Windows | Affected
| Fixed in– |
AI-suggested
Users should avoid running the installer from untrusted directories or locations where malicious DLLs could be present. Monitor vendor advisories for updates regarding a fix.
Description
CVE-2026-103665 is a vulnerability in the installer for Yamaha LAN Monitor for Windows. The installer may insecurely load DLL files from its launch directory, allowing a malicious DLL to be loaded if placed there. This can lead to arbitrary code execution with administrative privileges.