PatchSiren cyber security CVE debrief

CVE-2026-11317 Rockwell Automation CVE debrief

A denial of service security issue exists in the affected product. The security issue stems from a fault occurring when a crafted CIP message is sent. Devices with less memory are more likely to be affected. This can result in a major nonrecoverable fault (MNRF). A program download is required to recover.

Vendor: Rockwell Automation
Product: CompactLogix, ControlLogix
CVSS: HIGH 8.7
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-16
Original CVE updated: 2026-06-16
Advisory published: 2026-06-16
Advisory updated: 2026-06-16

Who should care

Users of the affected product, particularly those with devices having limited memory, should be aware of this vulnerability as it can lead to a major nonrecoverable fault.

Technical summary

The vulnerability is caused by a fault that occurs when a crafted CIP message is sent to the affected product. This can result in a denial of service and requires a program download to recover.

Defensive priority

HIGH

Recommended defensive actions

Users should apply the necessary patches or updates provided by the vendor to mitigate this vulnerability.
Implement network segmentation and access controls to limit the attack surface.
Monitor network traffic for suspicious activity.

Evidence notes

The CVE-2026-11317 record indicates a CVSS score of 8.7 and a HIGH severity level. The vulnerability is related to CWE-404.

Official resources

CVE-2026-11317 was published on 2026-06-16T15:16:34.607Z and modified on 2026-06-16T15:26:04.250Z.