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Rewterz Threat Advisory – ICS: Siemens SIMATIC CP 442-1 and CP 443-1 RNA Vulnerability

Severity

High

Analysis Summary

CVE-2022-27640 CVSS:7.4

Siemens SIMATIC CP 442-1 and CP 443-1 RNA is vulnerable to a denial of service, caused by improperly handling excessive ARP broadcast requests. By sending numerous ARP requests, a remote attacker could exploit this vulnerability to cause a denial of service.

Impact

  • Denial of Service

Indicators Of Compromise

CVE

  • CVE-2022-27640

Affected Vendors

  • Siemens

Affected Products

  • Siemens SIMATIC CP 442-1 RNA 1.5.17
  • Siemens SIMATIC CP 443-1 RNA 1.5.1

Remediation

Refer to Siemens Security Advisory for patch, upgrade or suggested workaround information.

Siemens Security Advisory