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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rockwellautomation | Micrologix 1100 Firmware | All versions |
| Rockwellautomation | Micrologix 1100 | - |
Related Weaknesses (CWE)
References
- https://us-cert.cisa.gov/ics/advisories/icsa-21-189-01Third Party AdvisoryUS Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-21-189-01Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2021-33012?
CVE-2021-33012 is a vulnerability with a CVSS score of 8.6 (HIGH). 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, w...
How severe is CVE-2021-33012?
CVE-2021-33012 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-33012?
Check the references section above for vendor advisories and patch information. Affected products include: Rockwellautomation Micrologix 1100 Firmware, Rockwellautomation Micrologix 1100.