Rockwell Automation CompactLogix/ControlLogix up to 34.15/35.14/36.11 CIP denial of service

Summaryinfo

A vulnerability classified as problematic has been found in Rockwell Automation CompactLogix and ControlLogix up to 34.15/35.14/36.11. Affected by this vulnerability is an unknown functionality of the component CIP Handler. Performing a manipulation results in denial of service. This vulnerability is cataloged as CVE-2026-11317. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Rockwell Automation CompactLogix and ControlLogix up to 34.15/35.14/36.11. This affects some unknown processing of the component CIP Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

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.

The advisory is shared at rockwellautomation.com. This vulnerability is uniquely identified as CVE-2026-11317 since 06/04/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Automation Software

Vendor

• Rockwell Automation

Name

• CompactLogix
• ControlLogix

Version

• 34.0
• 34.1
• 34.2
• 34.3
• 34.4
• 34.5
• 34.6
• 34.7
• 34.8
• 34.9
• 34.10
• 34.11
• 34.12
• 34.13
• 34.14
• 34.15
• 35.0
• 35.1
• 35.2
• 35.3
• 35.4
• 35.5
• 35.6
• 35.7
• 35.8
• 35.9
• 35.10
• 35.11
• 35.12
• 35.13
• 35.14
• 36.0
• 36.1
• 36.2
• 36.3
• 36.4
• 36.5
• 36.6
• 36.7
• 36.8
• 36.9
• 36.10
• 36.11

License

• commercial

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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CVSSv3info

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Exploitinginfo

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Entryinfo

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