Moxa G3100V2 Series, editions prior to Version 2.8, and OnCell G3111/G3151/G3211/G3251 Series, editions prior to Version 1.7 allows a refle…

published 2019-03-21 7 y ago modified 2026-06-17 4 mo ago also EUVD-2016-6754

cvss: 6.1; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits: 0; none known

Moxa G3100V2 Series, editions prior to Version 2.8, and OnCell G3111/G3151/G3211/G3251 Series, editions prior to Version 1.7 allows a reflected cross-site scripting attack which may allow an attacker to execute arbitrary script code in the user’s browser within the trust relationship between their browser and the server.

Patch / fix

fixed in 5

moxa oncell_g3100v2_firmware 2.8
moxa oncell_g3111_firmware 1.7
moxa oncell_g3151_firmware 1.7
moxa oncell_g3211_firmware 1.7
moxa oncell_g3251_firmware 1.7

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-16-236-01A updated 2025-06-09 cvss 6.5

Moxa OnCell Vulnerabilities (Update A)

Moxa OnCell G3100V2 Series <2.8 Moxa OnCell G3111/G3151/G3211/G3251 Series <1.7
affected: mitigation “Moxa has made firmware fixes available on their web site at the following locations: (http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=316&type_id=4)”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.1	CVSS:3.0/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

Affected products

Moxa OnCell G3100V2 Series
Moxa OnCell G3111/G3151/G3211/G3251 Series

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

ics-cert.us-cert.gov /advisories/ICSA-16-236-01
third-party-advisory, us-government-resource

Sources

CVE List CVE-2016-5819
NVD CVE-2016-5819

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