CVE-2019-6820

HIGH
8.2
CVSS Score
Published: May 22, 2019 at 07:40 PM UTC
Updated: June 17, 2026 at 02:39 AM UTC
24 products affected across 1 vendorModicon M221 FirmwareModicon M241 FirmwareModicon M251 Firmware

Using Modicon and PacDrive Controller, 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 by N/A?

Get instant alerts when new vulnerabilities affect Modicon and PacDrive Controller, 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 - before attackers find them.

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Severity
HIGH8.2
Exploit prediction
EPSS 1%
SSVC
No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
schneider-electric-atv-imc-drive-controller (same device)
All versions
schneider-electric-modicon-lmc058 (same device)
All versions
schneider-electric-modicon-lmc078 (same device)
All versions
schneider-electric-modicon-m100 (same device)
All versions
schneider-electric-modicon-m200 (same device)
All versions
schneider-electric-modicon-m221 (same device)
All versions
schneider-electric-modicon-m241 (same device)
All versions
schneider-electric-modicon-m251 (same device)
All versions
schneider-electric-modicon-m258 (same device)
All versions
schneider-electric-pacdrive-eco (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-306

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