CVE-2025-13824

Micro820®, Micro850®, Micro870® – Specialized Fuzzing Vulnerabilities

Published Dec 15, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

V23.012 https://compatibility.rockwellautomation.com/Pages/MultiProductFindDownloads.aspx ,  Migrate to the newer Micro850/870 controllers (L50E/L70E V23.012 https://compatibility.rockwellautomation.com/Pages/MultiProductFindDownloads.aspx ) ,  Migrate to the newer Micro820 controllers (L20E V23.011)

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Rockwellautomation
Rockwellautomation micro820
Rockwellautomation micro850
Rockwellautomation micro870
Vendors & Products Rockwellautomation
Rockwellautomation micro820
Rockwellautomation micro850
Rockwellautomation micro870
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Micro820®, Micro850®, Micro870® – Specialized Fuzzing Vulnerabilities
Weaknesses CWE-763
References
Metrics cvssV4_0

{'score': 8.7, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Rockwell
Published
Updated
Dec 15, 2025, 5:09 PM
Reserved
Dec 1, 2025, 2:29 PM
Status
Deferred
Published
Dec 15, 2025, 4:15 PM
Modified
Oct 7, 2026, 7:10 PM