Denial-of-Service Vulnerability in Rockwell Automation MicroLogix 1100
CVE-2021-33012

8.6HIGH

Key Information:

Vendor

Rockwellautomation

Status
Rockwell Automation Micrologix 1100
Vendor
CVE Published:
9 July 2021

What is CVE-2021-33012?

Rockwell Automation's MicroLogix 1100 series controllers are susceptible to a denial-of-service condition due to an issue that allows a remote, unauthenticated attacker to send specially crafted commands. When the controller is switched to RUN mode, this vulnerability can cause the controller to fault, leading to potential disruptions in operations. Proactive measures and patches are recommended to safeguard against such malicious attacks.

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Affected Version(s)

Rockwell Automation MicroLogix 1100 All Versions

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-189-01
x_refsource_MISC

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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