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
Rockwell Automation RSLogix 5000
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
Rockwell Automation FactoryTalk Services Platform>=2.10
Rockwell Automation RSLogix 5000>=16<=20
Rockwell Automation Studio 5000 Logix Designer>=21.0
Rockwell Automation Compact GuardLogix 5370 Firmware
Rockwell Automation Compact GuardLogix 5380 Firmware
Rockwell Automation CompactLogix 1768
Rockwell Automation CompactLogix
rockwellautomation compactlogix 5370
Rockwell Automation CompactLogix 5380 Firmware
Rockwell Automation CompactLogix 5480
Rockwell Automation ControlLogix 5550
ControlLogix 5560
Rockwell Automation ControlLogix 5570
Rockwell Automation ControlLogix 5580 Firmware
rockwellautomation DriveLogix 1794-L34
Rockwell Automation DriveLogix 5560
Rockwell Automation DriveLogix 5730 Firmware
Rockwell Automation GuardLogix 5570 Controller firmware
Rockwell Automation GuardLogix 5580
Rockwell Automation SoftLogix 5800 Controller

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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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