CVE-2023-0027 MEDIUM

CVE-2023-0027: Rockwell Automation Modbus TCP AOI Server Could Leak Sensitive Information

Vendor Rockwell Automation
Product Modbus TCP Server Add On Instructions
Weakness CWE-200 · Info exposure
Published March 17, 2023
Last update February 26, 2025
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 17, 2023 CVE published
February 26, 2025 Record updated