No exploitation reported

CVE-2019-6522

No exploitation reported by the sources we read.

Published2019-03-05
WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2019-03-0520:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-6522?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-6522?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Moxa eds-405a firmwareversion to verify

Branch	Affected	Fixed in	Source
3.8	≤ 3.8	no fix published	NVD

Moxa eds-408a firmwareversion to verify

Branch	Affected	Fixed in	Source
3.8	≤ 3.8	no fix published	NVD

Moxa eds-510a firmwareversion to verify

Branch	Affected	Fixed in	Source
3.8	≤ 3.8	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-19-057-01 CISA4 known affected
Moxa IKS, EDS (Update A)
IKS-G6824A series: Version 5.6 and prior · EDS-408A series: Version 3.8 and prior · EDS-510A series: Version 3.8 and prior · +1 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-19-057-01 · 4 productsInstall firmware patch. Patches may be requested from Moxa Customer Service (login required):
Mitigation from the vendor CISA ICSA-19-057-01 · 4 productsSet EDS series Web configuration as "https only” to reduce predictable session ID concern.
Mitigation from the vendor CISA ICSA-19-057-01 · 4 productsPlease see Moxa's security advisory for more information.

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.1read 2026-10-23
NVDCVSS 2.08.5read 2026-10-23
CNAweakness (CWE)CWE-125read 2026-10-23
NVDweakness (CWE)CWE-125read 2026-10-23
FIRST EPSSEPSS score2.5 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published: 2019-03-05
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-6522?

Is CVE-2019-6522 actively exploited?

Active exploitation of CVE-2019-6522 has not been confirmed. Its EPSS score was 2.5% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-6522?

CVE-2019-6522 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

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