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Status published
Unknown
CVE-2021-33012
Rockwell Automation MicroLogix 1100, all versions, allows a remote, unauthenticated...
Vulnerability Description
Rockwell Automation MicroLogix 1100, all versions, allows a remote, unauthenticated attacker sending specially crafted commands to cause the PLC to fault when the controller is switched to RUN mode, which results in a denial-of-service condition. If successfully exploited, this vulnerability will cause the controller to fault whenever the controller is switched to RUN mode.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Affected Software
Rockwell Automation MicroLogix 1100
Vulnerable Versions:
All Versions
Timeline
Official Publish:
July 9th, 2021
Last Modified:
June 3rd, 2026
Added to House:
July 21st, 2026
CVSS Vectors
No vector data available