NULL pointer dereference in Rockwell Automation Controllogix® 5580
CVE-2025-9166
A denial-of-service security issue exists in the affected product and version. The security issue stems from the controller repeatedly attempting to forward messages. The issue could result in a major nonrecoverable fault on the controller.
EPSS: 0.004 (30.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Rockwell Automation Controllogix® 5580 — versions Version 35.013
- Rockwellautomation Controllogix_5580
- Rockwellautomation Controllogix_5580_firmware — versions 35.013
Weakness classification (CWE)
Public proof-of-concept exploits
References
- PSIRT@rockwellautomation.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-9166?
- CVE-2025-9166 is a high-severity vulnerability in Rockwell Automation Controllogix® 5580, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-09-09.
- How severe is CVE-2025-9166?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-9166 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.