CVE-2021-33012

Summary

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.

Affected Software

Weaknesses

• CWE-20: IMPROPER INPUT VALIDATION CWE-20

ADP Enrichment

CVE Program Container

Additional References

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

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

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

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