What is CVE-2018-15820?

CVE-2018-15820 is a medium-severity vulnerability in Easyio 30p, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-03-02.

How severe is CVE-2018-15820?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Easyio 30p

CVE-2018-15820

EasyIO EasyIO-30P devices before 2.0.5.27 allow XSS via the dev.htm GDN parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-03-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (56.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.8% 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: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

packetstormsecurity.com/files/152454/EasyIO-30P-Authentication-Bypass-Cross-Sit… (Exploit, VDB Entry, Third Party Advisory)
seclists.org/fulldisclosure/2019/Apr/13 (Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2018-15820?: CVE-2018-15820 is a medium-severity vulnerability in Easyio 30p, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-03-02.
How severe is CVE-2018-15820?: Medium severity. CVSS v3 base score is 6.1 out of 10.