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Fencer Intel
medium 6.8

CVE-2018-0665 json

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 earli…

published 2019-01-09 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1475

cvss
6.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

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.

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.8 CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.2 AV:A/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • Yamaha Corporation Yamaha Broadband VoIP Router RT57i
  • Yamaha Corporation Yamaha Broadband VoIP Router RT58i
  • Yamaha Corporation Yamaha Broadband VoIP Router NVR500
  • Yamaha Corporation Yamaha Gigabit VPN Router RTX810
  • Yamaha Corporation Yamaha Firewall FWX120
  • NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION Biz Box Router N58i, N500, NVR500, and RTX810
  • NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION Biz Box Router N58i, and N500

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.