Medium severity5.3NVD Advisory· Published Mar 17, 2023· Updated Jun 17, 2026
CVE-2023-0027
CVE-2023-0027
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Rockwell Automation/Modbus TCP Server Add On Instructionsv5Range: 2.00.00 - 2.00.03
- cpe:2.3:a:rockwellautomation:modbus_tcp_server_add_on_instructions:*:*:*:*:*:*:*:*Range: >=2.00.00,<2.04.00
- Range: <2.04.00
Patches
Vulnerability mechanics
References
1- rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138766nvdPermissions RequiredVendor Advisory
News mentions
0No linked articles in our index yet.