CVE-2018-0665: Yamaha NVR500 Firmware

Medium severity, CVSS 6.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Yamaha routers RT57i Rev.8.00.95 and earlier, RT58i Rev.9.01.51 and earlier, NVR500 Rev.11.00.36 and earlier, RTX810 Rev.11.01.31 and earlier, allow an administrative user to embed arbitrary scripts to the configuration data through a certain form field of the configuration page, which may be executed on another administrative user's web browser. This is a different vulnerability from CVE-2018-0666.

Affected products

• Yamaha NVR500 Firmware: up to and including rev.11.00.36
• Yamaha RT57I Firmware: up to and including rev.8.00.95
• Yamaha RT58I Firmware: up to and including rev.9.01.51
• Yamaha RTX810 Firmware: up to and including rev.11.01.31

Published 2019-01-09. Last modified 2026-06-17.