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

published 2020-03-02 6 y ago modified 2026-06-17 4 mo ago also EUVD-2018-7678

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

Patch / fix

fixed in 1

easyio easyio_30p_firmware 2.0.5.27

Exploit prediction

0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

packetstormsecurity.com https://packetstormsecurity.com/files/152454/EasyIO-30P-Authentication-Bypass-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified
seclists.org https://seclists.org/fulldisclosure/2019/Apr/13 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

packetstormsecurity.com /files/152454/EasyIO-30P-Authentication-Bypass-Cross-Site-Scripting.html
exploit, third-party-advisory, vdb-entry
seclists.org /fulldisclosure/2019/Apr/13
exploit, mailing-list, third-party-advisory

Sources

CVE List CVE-2018-15820
NVD CVE-2018-15820

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary