What is CVE-2019-6451?

CVE-2019-6451 is a high-severity vulnerability in Soyal Ar-727h, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2019-06-06.

How severe is CVE-2019-6451?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Soyal Ar-727h

CVE-2019-6451

On SOYAL AR-727H and AR-829Ev5 devices, all CGI programs allow unauthenticated POST access.

Vulnerability class: Broken Authentication

Published 2019-06-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.017 (77.1th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

www.nccst.nat.gov.tw (Third Party Advisory, Broken Link)
github.com/cvereveal/CVEs/tree/master/CVE-2019-6451 (Exploit, Third Party Advisory)
www.soyal.com/epaper/e-paper-en-117.html (Broken Link)
www.soyal.com/exhibition/cve-2019-6451/ (Broken Link)
www.soyal.com.tw/cve-2019-6451/ (Vendor Advisory)

Frequently asked questions

What is CVE-2019-6451?: CVE-2019-6451 is a high-severity vulnerability in Soyal Ar-727h, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2019-06-06.
How severe is CVE-2019-6451?: High severity. CVSS v3 base score is 7.5 out of 10.