Critical 9.8Published Oct 29, 2026

CVE-2026-97854Yamaha wireless LAN router NWR100 provided by Yamaha Corporation contains an OS command injection vulnerability.

Updated under an hour ago (Oct 30, 2026, 4:50 AM ET)

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It affects Yamaha Corporation NWR100. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Yamaha wireless LAN router NWR100 provided by Yamaha Corporation contains an OS command injection vulnerability. Arbitrary OS commands may be executed by sending a specially crafted request to the affected product.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: jpcert
NVD analysis: Deferred
Record last updated: Oct 29, 2026
First seen by InfoSec Signals: Oct 29, 2026

Affected products

Affected products

Yamaha Corporation NWR100 yamaha:nwr100 (from the name)	through Rev.26.00.07	CNA record

References

References

https://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91027179.html
https://jvn.jp/en/vu/JVNVU91027179/

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.