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Rewterz Threat Advisory – CVE-2019-6819 – Schneider Electric Modicon Controllers Denial of Service Vulnerability

Severity

Medium

Analysis Summary

An attacker could create a denial-of-service condition by sending a specific crafted Modbus frame to the affected device.

Impact

Denial of service

Affected Vendors

Schneider Electric

Affected Products

  • Modicon M340: Firmware versions prior to v3.01
  • Modicon M580: Firmware versions prior to v2.80
  • Modicon Quantum: All firmware versions
  • Modicon Premium: All firmware versions

Remediation

Schneider Electric has recommended the following to mitigate this vulnerability.

Modicon M340 – The vulnerability is fixed in v3.01

Modicon M580 – The vulnerability is fixed in v2.80