Moxa IKS and EDS fails to properly check array bounds which may allow an attacker to read device memory on arbitrary addresses, and may all…

published 2019-03-05 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16081

cvss: 9.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.5%; EPSS 2.5% chance of exploitation in 30 days, percentile 85%
public exploits: 0; none known

Moxa IKS and EDS fails to properly check array bounds which may allow an attacker to read device memory on arbitrary addresses, and may allow an attacker to retrieve sensitive data or cause device reboot.

Vendor advisories

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

cisa ICSA-19-057-01 updated 2019-10-24 cvss 9.1

Moxa IKS, EDS (Update A)

Moxa EDS-405A series <= 3.8 Moxa EDS-408A series <= 3.8 Moxa EDS-510A series <= 3.8 Moxa IKS-G6824A series <= 5.6
affected: mitigation “Install firmware patch. Patches may be requested from Moxa Customer Service (login required):” moxa.com

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

2.54% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD	2.0	8.5	AV:N/AC:L/Au:N/C:P/I:N/A:C

Affected products

ICS-CERT Moxa IKS, EDS

Classification

Weakness

CWE-125 Out-of-bounds Read

References

ics-cert.us-cert.gov /advisories/ICSA-19-057-01
third-party-advisory, us-government-resource
securityfocus.com /bid/107178
vdb-entry, third-party-advisory

Sources

CVE List CVE-2019-6522
NVD CVE-2019-6522

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