CVE-2021-20843

medium

Description

Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to alter the settings of the product via a specially crafted web page.

References

https://www.ntt-west.co.jp/smb/kiki_info/info/211109.html

https://jvn.jp/en/vu/JVNVU91161784/index.html

https://business.ntt-east.co.jp/topics/2021/11_09.html

http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html

Details

Source: Mitre, NVD

Published: 2021-11-24

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 3.5

Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N

Severity: Low

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00283