What is CVE-2023-0027?

CVE-2023-0027 is a medium-severity vulnerability in Rockwell Automation Modbus Tcp Server Add On Instructions, classified under Information Disclosure. CVSS score: 5.3/10. Published 2023-03-17.

How severe is CVE-2023-0027?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2023-0027 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Rockwell Automation Modbus Tcp Server Add On Instructions

CVE-2023-0027

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.

Vulnerability class: Information Disclosure

EPSS: 0.008 (54.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Rockwell Automation Modbus Tcp Server Add On Instructions — versions 2.00.00 - 2.00.03
Rockwellautomation Modbus_tcp_server_add_on_instructions

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

karimhabush/cyberowl

References

PSIRT@rockwellautomation.com (Permissions Required, Vendor Advisory)

Frequently asked questions

What is CVE-2023-0027?: CVE-2023-0027 is a medium-severity vulnerability in Rockwell Automation Modbus Tcp Server Add On Instructions, classified under Information Disclosure. CVSS score: 5.3/10. Published 2023-03-17.
How severe is CVE-2023-0027?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-0027 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.