CVE-2026-97854 Yamaha NWR100 - Command Injection

Yamaha wireless LAN router NWR100 contains a command injection caused by improper input validation, letting attackers execute arbitrary OS commands remotely, exploit requires sending a specially crafted request.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
1.37% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
29 October 2026
Updated
31 October 2026
Weakness
CWE-78

Vendor fix

Update to the latest firmware version provided by Yamaha.

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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