--- title: "CVE-2026-97854: Yamaha NWR100 - Command Injection" description: "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." url: https://panop.io/threat-heartbeat/CVE-2026-97854/ --- # 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-97854) ## 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](https://cwe.mitre.org/data/definitions/78.html) ## 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 - [https://nvd.nist.gov/vuln/detail/CVE-2026-97854](https://nvd.nist.gov/vuln/detail/CVE-2026-97854) - [https://jvn.jp/en/vu/JVNVU91027179/](https://jvn.jp/en/vu/JVNVU91027179/) - [https://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91027179.html](https://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91027179.html) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)