CVE-2026-9307 PUBLISHED

Rockwell Automation CompactLogix 5370 Controllers – Multiple Vulnerabilities

Assigner: Rockwell
Reserved: 22.05.2026 Published: 16.06.2026 Updated: 16.06.2026

A sensitive information disclosure security issue exists within the affected CompactLogix controllers. The controller's web server exposes CIP Connection IDs on the diagnostics webpage, which are accessible to any unauthenticated user on the network. This information can be leveraged by an attacker to construct malicious packets, leading to Denial-of-Service.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 6.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Rockwell Automation
Product	CompactLogix 5370
Versions	Default: unaffected Version V36 is affected

Solutions

V38.011 https://compatibility.rockwellautomation.com/Pages/MultiProductFindDownloads.aspx

References

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1776.html

Problem Types

CWE-497 Exposure of sensitive system information to an unauthorized control sphere CWE