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CVE-2019-6520

24
FAUCET Score

CVE-2019-6520 describes an improper authorization vulnerability in Moxa IKS and EDS series devices, including specific EDS-405A, EDS-408A, EDS-510A, and IKS-G6824A models and their firmware. This flaw allows a read-only user to bypass server-side authority checks and perform arbitrary configuration changes. Rated with a CVSS score of 7.5 (High), it has a network attack vector and low attack complexity, leading to a high impact on integrity without affecting confidentiality or availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.5CPE matchmatch criteria
cpe:2.3:o:moxa:iks-g6824a_firmware:*:*:*:*:*:*:*:*
<= 3.8CPE matchmatch criteria
cpe:2.3:o:moxa:eds-405a_firmware:*:*:*:*:*:*:*:*
<= 3.8CPE matchmatch criteria
cpe:2.3:o:moxa:eds-408a_firmware:*:*:*:*:*:*:*:*
<= 3.8CPE matchmatch criteria
cpe:2.3:o:moxa:eds-510a_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.65%
Probability of exploitation in next 30 days
EPSS Percentile
74.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0165 is in the 56th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ics-cert.us-cert.gov / advisories/ICSA-19-057-01
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/107178
Third Party AdvisoryVDB Entry