critical
10
CWE
522
Advisory Published
Updated

CVE-2021-22681

First published: Wed Mar 03 2021(Updated: )

Rockwell Automation Studio 5000 Logix Designer Versions 21 and later, and RSLogix 5000 Versions 16 through 20 use a key to verify Logix controllers are communicating with Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580; DriveLogix 5560, 5730, 1794-L34; Compact GuardLogix 5370, 5380; GuardLogix 5570, 5580; SoftLogix 5800. Rockwell Automation Studio 5000 Logix Designer Versions 21 and later and RSLogix 5000: Versions 16 through 20 are vulnerable because an unauthenticated attacker could bypass this verification mechanism and authenticate with Rockwell Automation CompactLogix 1768, 1769, 5370, 5380, 5480: ControlLogix 5550, 5560, 5570, 5580; DriveLogix 5560, 5730, 1794-L34; Compact GuardLogix 5370, 5380; GuardLogix 5570, 5580; SoftLogix 5800.

Credit: ics-cert@hq.dhs.gov

Affected SoftwareAffected VersionHow to fix
Rockwellautomation Factorytalk Services Platform>=2.10
Rockwellautomation Rslogix 5000>=16<=20
Rockwellautomation Studio 5000 Logix Designer>=21.0
Rockwellautomation Compact Guardlogix 5370
Rockwellautomation Compact Guardlogix 5380
Rockwellautomation Compactlogix 1768
Rockwellautomation Compactlogix 1769
Rockwellautomation Compactlogix 5370
Rockwellautomation Compactlogix 5380
Rockwellautomation Compactlogix 5480
Rockwellautomation Controllogix 5550
Rockwellautomation Controllogix 5560
Rockwellautomation Controllogix 5570
Rockwellautomation Controllogix 5580
Rockwellautomation Drivelogix 1794-l34
Rockwellautomation Drivelogix 5560
Rockwellautomation Drivelogix 5730
Rockwellautomation Guardlogix 5570
Rockwellautomation Guardlogix 5580
Rockwellautomation Softlogix 5800
Rockwell Automation RSLogix 5000: Versions 16 through 20
Rockwell Automation Studio 5000 Logix Designer>=21
Rockwell Automation FactoryTalk Security, part of the FactoryTalk Services Platform, if configured and deployed v2.10 and later

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-22681?

    CVE-2021-22681 is a vulnerability in Rockwell Automation Studio 5000 Logix Designer and RSLogix 5000 that allows unauthorized access to Logix controllers.

  • What is the severity of CVE-2021-22681?

    CVE-2021-22681 has a severity rating of 9.8 (Critical).

  • Which versions of Rockwell Automation Studio 5000 Logix Designer are affected?

    Rockwell Automation Studio 5000 Logix Designer Versions 21 and later are affected by CVE-2021-22681.

  • Which versions of RSLogix 5000 are affected?

    RSLogix 5000 Versions 16 through 20 are affected by CVE-2021-22681.

  • How can I fix CVE-2021-22681?

    Apply the necessary patches and updates provided by Rockwell Automation to fix CVE-2021-22681.

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