CVE-2021-20843
Last modified
CVE-2021-20843 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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.. EPSS estimates a 0.67% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Yamaha | Rtx830 Firmware | <= 15.02.17 |
| Yamaha | Nvr510 Firmware | <= 15.01.18 |
| Yamaha | Nvr700w Firmware | <= 15.00.19 |
| Yamaha | Rtx1210 Firmware | <= 14.01.38 |
| Ntt-West | Biz Box Rtx830 Firmware | <= 15.02.17 |
| Ntt-West | Biz Box Nvr510 Firmware | < 15.01.18 |
| Ntt-West | Biz Box Nvr700w Firmware | <= 15.00.19 |
| Ntt-West | Biz Box Rtx1210 Firmware | <= 14.01.38 |
References
- http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.htmlMitigation, Vendor Advisory
- https://business.ntt-east.co.jp/topics/2021/11_09.htmlMitigation, Vendor Advisory
- https://jvn.jp/en/vu/JVNVU91161784/index.htmlMitigation, Third Party Advisory
- https://www.ntt-west.co.jp/smb/kiki_info/info/211109.htmlMitigation, Vendor Advisory
- http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.htmlMitigation, Vendor Advisory
- https://business.ntt-east.co.jp/topics/2021/11_09.htmlMitigation, Vendor Advisory
- https://jvn.jp/en/vu/JVNVU91161784/index.htmlMitigation, Third Party Advisory
- https://www.ntt-west.co.jp/smb/kiki_info/info/211109.htmlMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20843?
How severe is CVE-2021-20843?
How do I fix CVE-2021-20843?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-20838Office Server Document Converter V7.2MR4 and earlier and V7.…7.5
- CVE-2021-20839Office Server Document Converter V7.2MR4 and earlier and V7.…6.5
- CVE-2021-2084Vulnerability in the Oracle CRM Technical Foundation product…8.2
- CVE-2021-20840Cross-site scripting vulnerability in Booking Package - Appo…6.1
- CVE-2021-20841Improper access control in Management screen of EC-CUBE 2 se…6.5
- CVE-2021-20842Cross-site request forgery (CSRF) vulnerability in EC-CUBE 2…6.5
- CVE-2021-20844Improper neutralization of HTTP request headers for scriptin…5.7
- CVE-2021-20845Cross-site request forgery (CSRF) vulnerability in Unlimited…8.8
- CVE-2021-20846Cross-site request forgery (CSRF) vulnerability in Push Noti…8.8
- CVE-2021-20847Cross-site scripting vulnerability in Wi-Fi STATION SH-52A (…6.1
- CVE-2021-20848Cross-site scripting vulnerability in rwtxt versions prior t…6.1
- CVE-2021-2085Vulnerability in the Oracle CRM Technical Foundation product…8.2
Are you affected by CVE-2021-20843?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST