VULNERABILITY INTELLIGENCE

CVE-2023-0027

CVSS score5.3 MEDIUM
EPSS probability0.85%
CISA KEVNot currently listed
Published2023-03-17
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Weakness classification

  • PSIRT@rockwellautomation.com: CWE-200
  • nvd@nist.gov: CWE-200

Primary references