CVE-2026-11317 Rockwell Automation Logix 5370 and 5570 Controllers Vulnerable To Denial of Service Via CIP
Attackers can cause a major nonrecoverable fault in Rockwell Logix controllers by sending crafted CIP messages, requiring a program download to recover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11317?
CVE-2026-11317 is a high-severity denial of service vulnerability in Rockwell Automation CompactLogix, ControlLogix, published on 16 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-404
Which versions are affected by CVE-2026-11317?
How do I fix CVE-2026-11317?
No fix has been published for CVE-2026-11317 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-11317 being exploited?
There is no known exploitation of CVE-2026-11317 in the wild and no public exploit code.
Sources
Also known as GHSA-mc6f-7cr6-6cwg.