Vulnerability in Ntt-West Biz Box Nvr510
CVE-2021-20844
Improper neutralization of HTTP request headers for scripting syntax 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 obtain sensitive information via a specially crafted web page.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.010 (59.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · 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-2021-20844?
- CVE-2021-20844 is a medium-severity vulnerability in Ntt-West Biz Box Nvr510, classified under Improper Encoding or Escaping of Output. CVSS score: 5.7/10. Published 2021-11-24.
- How severe is CVE-2021-20844?
- Medium severity. CVSS v3 base score is 5.7 out of 10.