Vulnerability in Ntt-West Biz Box Nvr510
CVE-2021-20843
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
Weakness classification (CWE)
References
- www.ntt-west.co.jp/smb/kiki_info/info/211109.html (Mitigation, Vendor Advisory)
- business.ntt-east.co.jp/topics/2021/11_09.html (Mitigation, Vendor Advisory)
- www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html (Mitigation, Vendor Advisory)
- jvn.jp/en/vu/JVNVU91161784/index.html (Third Party Advisory, Mitigation)
Frequently asked questions
- What is CVE-2021-20843?
- CVE-2021-20843 is a medium-severity vulnerability in Ntt-West Biz Box Nvr510, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 5.4/10. Published 2021-11-24.
- How severe is CVE-2021-20843?
- Medium severity. CVSS v3 base score is 5.4 out of 10.