No exploitation reported

CVE-2019-6820

No exploitation reported by the sources we read.

Published2019-05-22
WeaknessCWE-306

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

A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a specific Ethernet frame is received in all versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2

Timeline

dates in UTC

2019-05-2220:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2019-6820?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-6820?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Schneider-electric atv imc drive controller firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Schneider-electric modicon lmc058 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Schneider-electric modicon lmc078 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

9 more products in the sources.

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

Fix

Advisories and patches

www.schneider-electric.comVendor Advisory

Detection

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

Sources

CISA-ADPSSVC decisionnone2026-05-28
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.18.22026-05-28
NVDCVSS 3.18.2read 2026-10-23
NVDCVSS 2.06.4read 2026-10-23
CNAweakness (CWE)CWE-306read 2026-10-23
NVDweakness (CWE)CWE-306read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Published: 2019-05-22
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-6820?

Is CVE-2019-6820 actively exploited?

Active exploitation of CVE-2019-6820 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-6820?

CVE-2019-6820 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

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