Cyber Resilience

CVE-2025-9166

High

Published: 09 September 2025

Published
09 September 2025
Modified
20 October 2025
KEV Added
—
Patch
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CVSS Score v4 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0017 38.2th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-9166 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Rockwellautomation Controllogix 5580 Firmware. Its CVSS base score is 8.2 (High).

Operationally, ranked at the 38.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-476

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

rockwellautomation
controllogix 5580 firmware
35.013

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References