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Vulnerability · Published Mar 17, 2023 · Assigned by Rockwell

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

Medium 5.3

In plain English

A medium-severity information exposure in Modbus TCP Server Add On Instructions from Rockwell Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.8%top 41.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Rockwell Automation Modbus TCP Server Add On Instructions 2.00.00 - 2.00.03

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References