CVE-2021-20843

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.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.28%
Vendor Advisory co.jp Vendor Advisory co.jp Vendor Advisory co.jp
Affected: Yamaha Corporation RTX830, NVR510, NVR700W, RTX1210
Published at:
Updated at:

References

Link Tags
https://www.ntt-west.co.jp/smb/kiki_info/info/211109.html mitigation vendor advisory
https://business.ntt-east.co.jp/topics/2021/11_09.html mitigation vendor advisory
http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html mitigation vendor advisory
https://jvn.jp/en/vu/JVNVU91161784/index.html mitigation third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-20843?
CVE-2021-20843 has been scored as a medium severity vulnerability.
How to fix CVE-2021-20843?
To fix CVE-2021-20843, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-20843 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20843 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20843?
CVE-2021-20843 affects Yamaha Corporation RTX830, NVR510, NVR700W, RTX1210.
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