CVE-2023-0027

Rockwell Automation Modbus TCP AOI Server Could Leak Sensitive Information

Description

Rockwell Automation Modbus TCP Server AOI prior to 2.04.00 is vulnerable to an unauthorized user sending a malformed message that could cause the controller to respond with a copy of the most recent response to the last valid request. If exploited, an unauthorized user could read the connected device’s Modbus TCP Server AOI information.

Remediation

Solution:

  • Customers should update their software to versions 2.04.00 and later to mitigate this issue.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory custhelp.com
Affected: Rockwell Automation Modbus TCP Server Add On Instructions
Published at:
Updated at:

References

Link Tags
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138766 permissions required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-0027?
CVE-2023-0027 has been scored as a medium severity vulnerability.
How to fix CVE-2023-0027?
To fix CVE-2023-0027: Customers should update their software to versions 2.04.00 and later to mitigate this issue.
Is CVE-2023-0027 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-0027 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-0027?
CVE-2023-0027 affects Rockwell Automation Modbus TCP Server Add On Instructions.
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