Home/CVE/A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device
CVE

CVE-2019-6820

A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device

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.

HIGH · CVSS 8.2 EPSS 0.00302
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-306Missing Authentication for Critical Function
CWE-306Missing Authentication for Critical Function
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Affected Products & Versions

12
schneider-electric modicon m100 firmwareall versions
schneider-electric modicon m200 firmwareall versions
schneider-electric modicon m221 firmwareall versions
schneider-electric atv imc drive controller firmwareall versions
schneider-electric modicon m241 firmwareall versions
schneider-electric modicon m251 firmwareall versions
schneider-electric modicon m258 firmwareall versions
schneider-electric modicon lmc058 firmwareall versions
▣

Scoring & Timeline

8.2
HIGH · CVSS v3.1 · cybersecurity@se.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 May 2019 · 08:29 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-02/Vendor Advisory
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