Rockwell Automation Micro850/870 Dependency on Vulnerable Third-Party Component (CVE-2025-13823)

medium Tenable OT Security Plugin ID 505885

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A security issue was found in the IPv6 stack in the Micro850 and Micro870 controllers. This issue occurs when the controllers receive multiple malformed packets, causing the controller to enter a recoverable fault (fault code 0xFE60). To recover the controller, the fault must be cleared.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Rockwell Automation recommends users of Micro850/870 (2080-L50E/2080-L70E) update to V23.012 or later.

For users unable to upgrade to a corrected version, Rockwell Automation advises disabling IPv6 functionality if it is not required.

Plugin Details

Severity: Medium

ID: 505885

File Name: tenable_ot_rockwell_CVE-2025-13823.nasl

Version: 1.1

Type: Remote

Family: Tenable.ot

Published: 7/29/2026

Updated: 7/29/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.59

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:/o:rockwellautomation:micro850_firmware, cpe:/o:rockwellautomation:micro870_firmware

Required KB Items: Tenable.ot/Rockwell

Patch Publication Date: 12/9/2025

Vulnerability Publication Date: 12/9/2025

Reference Information

CVE: CVE-2025-13823

CWE: 1395

ICSA: 25-352-07

Detections

Analytics