What is CVE-2016-4821?

CVE-2016-4821 is a medium-severity vulnerability in Iodata Etx-R. CVSS score: 5.3/10. Published 2016-06-19.

How severe is CVE-2016-4821?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Iodata Etx-R

CVE-2016-4821

I-O DATA DEVICE ETX-R devices allow remote attackers to cause a denial of service (web-server crash) via unspecified vectors.

Published 2016-06-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.016 (74.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

References

jvndb.jvn.jp/jvndb/JVNDB-2016-000101 (Vendor Advisory, third-party-advisory)
jvn.jp/en/jp/JVN96052093/index.html (Vendor Advisory, third-party-advisory)
www.iodata.jp/support/information/2016/etx-r/ (Vendor Advisory)

Frequently asked questions

What is CVE-2016-4821?: CVE-2016-4821 is a medium-severity vulnerability in Iodata Etx-R. CVSS score: 5.3/10. Published 2016-06-19.
How severe is CVE-2016-4821?: Medium severity. CVSS v3 base score is 5.3 out of 10.