What is CVE-2016-4845?

CVE-2016-4845 is a high-severity vulnerability in Iodata Hvl-A, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2016-09-24.

How severe is CVE-2016-4845?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2016-4845 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

CSRF in Iodata Hvl-A

CVE-2016-4845

Cross-site request forgery (CSRF) vulnerability on I-O DATA DEVICE HVL-A2.0, HVL-A3.0, HVL-A4.0, HVL-AT1.0S, HVL-AT2.0, HVL-AT3.0, HVL-AT4.0, HVL-AT2.0A, HVL-AT3.0A, and HVL-AT4.0A devices with firmware before 2.04 allows remote attackers to hijack the authentication of arbitrary users for requests that delete content.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2016-09-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.024 (83.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

Iodata Hvl-A
Iodata Hvl-A2.0 Firmware — versions 2.03
Iodata Hvl-A3.0 Firmware — versions 2.03
Iodata Hvl-A4.0 Firmware — versions 2.03
Iodata Hvl-At
Iodata Hvl-At1.0s Firmware — versions 2.03
Iodata Hvl-At2.0a Firmware — versions 2.03
Iodata Hvl-At2.0 Firmware — versions 2.03
Iodata Hvl-At3.0a Firmware — versions 2.03
Iodata Hvl-At3.0 Firmware — versions 2.03

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

www.iodata.jp/support/information/2016/hvl-a_csrf/ (Vendor Advisory)
jvndb.jvn.jp/jvndb/JVNDB-2016-000134 (VDB Entry, Third Party Advisory, third-party-advisory)
www.securityfocus.com/bid/92352 (vdb-entry)
jvn.jp/en/jp/JVN35062083/index.html (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2016-4845?: CVE-2016-4845 is a high-severity vulnerability in Iodata Hvl-A, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2016-09-24.
How severe is CVE-2016-4845?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2016-4845 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.