CVE-2026-9637
Received
Received - Intake
Denial-of-Service in Rockwell Automation Logix Platforms Due to Improper CIP Message Input Validation
Vulnerability report for CVE-2026-9637, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-01
Last updated on: 2026-09-01
Assigner: Rockwell Automation
Description
Description
A denial-of-service security issue exists in the affected Logix platforms listed in the table above. The security issue stems from improper validation of input length during CIP message processing. This can result in a major nonrecoverable fault (MNRF), requiring a power cycle to recover
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| rockwell_automation | logix | * |
| rockwell_automation | controllogix_5580 | to 33 (exc) |
| rockwell_automation | compactlogix_5380 | to 33 (exc) |
| rockwell_automation | guardlogix_5580 | to 33 (exc) |
| rockwell_automation | compact_guardlogix_5380 | to 33 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
