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Severity
High
Analysis Summary
CVE-2021-33012
A remote, unauthenticated attacker sending specially crafted commands could 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 a fault when the controller is switched to RUN mode.
Impact
- Denial-of-Service
Affected Vendors
Rockwell Automation
Affected Products
- MicroLogix 1100: All versions
Remediation
Visit the website for more information on the affected products, patches, and updates. https://us-cert.cisa.gov/ics/advisories/icsa-21-189-01