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Vulnerabilities

Vulnerability · CVE-2025-13823

A security issue was found in the IPv6 stack in the Micro850 and Micro870 controllers when the controllers received multiple malformed packets during fuzzing.

Published Dec 15, 2025 · catalog updated Dec 15, 2025 · Rockwell Automation Micro820®, Micro850®, Micro870®

Last checked Nov 8, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-13823. EPSS is 0.20%. Act only if a listed version of Rockwell Automation Micro820®, Micro850®, Micro870® is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.20%
Remediation
Advisory link
Affected products
vendor Rockwell Automation Micro820®, Micro850®, Micro870® V23.011

A security issue was found in the IPv6 stack in the Micro850 and Micro870 controllers when the controllers received multiple malformed packets during fuzzing. The controllers will go into recoverable fault with fault code 0xFE60. To recover the controller, clear the fault.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Rockwell Automation Micro820®, Micro850®, Micro870® V23.011V23.011

How to fix CVE-2025-13823

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-13823. EPSS is 0.20%. Act only if a listed version of Rockwell Automation Micro820®, Micro850®, Micro870® is installed.

Which versions are affected?

Compare what you have installed with Rockwell Automation Micro820®, Micro850®, Micro870® V23.011 V23.011. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.20%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 15, 2025 · EUVD

    Detected

    A security issue was found in the IPv6 stack in the Micro850 and Micro870 controllers when the controllers received multiple malformed packets during fuzzing. The controllers will go into recoverable fault with fault code 0xFE60. To recover the controller, clear the fault.

  2. Dec 15, 2025 · EUVD

    Updated

    A security issue was found in the IPv6 stack in the Micro850 and Micro870 controllers when the controllers received multiple malformed packets during fuzzing. The controllers will go into recoverable fault with fault code 0xFE60. To recover the controller, clear the fault.

Sources

  • CVE.orgVulnerability recordCVE-2025-13823

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-13823

    30-day exploitation probability 0.20%

    first.org
  • EUVDVulnerability recordEUVD-2025-203386

    A security issue was found in the IPv6 stack in the Micro850 and Micro870 controllers when the controllers received multiple malformed packets during fuzzing. The controllers will go into recoverable fault with fault code 0xFE60. To recover the controller, clear the fault.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 8, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 8, 2026
  • EUVDNov 2, 2026
  • CVE.orgOct 27, 2026