CVE-2025-13824 HIGH

CVE-2025-13824: Micro820®, Micro850®, Micro870® – Specialized Fuzzing Vulnerabilities

Vendor Rockwell Automation
Product Micro820®, Micro850®, Micro870®
Weakness CWE-763
Published December 15, 2025
Last update December 15, 2025

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

A security issue exists due to improper handling of malformed CIP packets during fuzzing. The controller enters a hard fault with solid red Fault LED and becomes unresponsive. Upon power cycle, the controller will enter recoverable fault where the MS LED and Fault LED become flashing red and reports fault code 0xF019. To recover, clear the fault.

Key dates

02Disclosure timeline

December 15, 2025 CVE published
December 15, 2025 Record updated