CVE-2021-20843
First published: Wed Nov 24 2021(Updated: )
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.
Credit: vultures@jpcert.or.jp
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Yamaha Rtx830 Firmware | <=15.02.17 | |
| Yamaha Rtx830 | ||
| Yamaha Nvr510 Firmware | <=15.01.18 | |
| Yamaha Nvr510 | ||
| Yamaha Nvr700w Firmware | <=15.00.19 | |
| Yamaha Nvr700w | ||
| Yamaha Rtx1210 Firmware | <=14.01.38 | |
| Yamaha Rtx1210 | ||
| Ntt-west Biz Box Rtx830 Firmware | <=15.02.17 | |
| Ntt-west Biz Box Rtx830 | ||
| Ntt-west Biz Box Nvr510 Firmware | <15.01.18 | |
| Ntt-west Biz Box Nvr510 | ||
| Ntt-west Biz Box Nvr700w Firmware | <=15.00.19 | |
| Ntt-west Biz Box Nvr700w | ||
| Ntt-west Biz Box Rtx1210 Firmware | <=14.01.38 | |
| Ntt-west Biz Box Rtx1210 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-20843?
The severity of CVE-2021-20843 is medium with a severity value of 5.4.
How does CVE-2021-20843 affect Yamaha RTX830?
Yamaha RTX830 firmware versions up to and including 15.02.17 are affected by CVE-2021-20843.
How does CVE-2021-20843 affect Yamaha NVR510?
Yamaha NVR510 firmware versions up to and including 15.01.18 are affected by CVE-2021-20843.
How does CVE-2021-20843 affect Yamaha NVR700W?
Yamaha NVR700W firmware versions up to and including 15.00.19 are affected by CVE-2021-20843.
How does CVE-2021-20843 affect Yamaha RTX1210?
Yamaha RTX1210 firmware versions up to and including 14.01.38 are affected by CVE-2021-20843.
How can an attacker exploit CVE-2021-20843?
A remote authenticated attacker can exploit CVE-2021-20843 to alter the settings of the affected product via a specially crafted web request.
Are there any official references for CVE-2021-20843?
Yes, you can find official references for CVE-2021-20843 at the following links: [1] http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html [2] https://business.ntt-east.co.jp/topics/2021/11_09.html [3] https://jvn.jp/en/vu/JVNVU91161784/index.html
- agent/type
- collector/nvd-index
- agent/software-canonical-lookup
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/severity
- agent/author
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- agent/first-publish-date
- agent/description
- agent/event
- vendor/yamaha
- canonical/yamaha rtx830 firmware
- version/yamaha rtx830 firmware/15.02.17
- canonical/yamaha rtx830
- canonical/yamaha nvr510 firmware
- version/yamaha nvr510 firmware/15.01.18
- canonical/yamaha nvr510
- canonical/yamaha nvr700w firmware
- version/yamaha nvr700w firmware/15.00.19
- canonical/yamaha nvr700w
- canonical/yamaha rtx1210 firmware
- version/yamaha rtx1210 firmware/14.01.38
- canonical/yamaha rtx1210
- vendor/ntt-west
- canonical/ntt-west biz box rtx830 firmware
- version/ntt-west biz box rtx830 firmware/15.02.17
- canonical/ntt-west biz box rtx830
- canonical/ntt-west biz box nvr510 firmware
- canonical/ntt-west biz box nvr510
- canonical/ntt-west biz box nvr700w firmware
- version/ntt-west biz box nvr700w firmware/15.00.19
- canonical/ntt-west biz box nvr700w
- canonical/ntt-west biz box rtx1210 firmware
- version/ntt-west biz box rtx1210 firmware/14.01.38
- canonical/ntt-west biz box rtx1210