CVE-2021-33012

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.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.74% Top 15%
Third-Party Advisory cisa.gov
Affected: n/a Rockwell Automation MicroLogix 1100
Published at:
Updated at:

References

Link Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-189-01 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2021-33012?
CVE-2021-33012 has been scored as a high severity vulnerability.
How to fix CVE-2021-33012?
To fix CVE-2021-33012, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33012 being actively exploited in the wild?
It is possible that CVE-2021-33012 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-33012?
CVE-2021-33012 affects n/a Rockwell Automation MicroLogix 1100.
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