Vulnerability · Published Dec 15, 2025 · Assigned by Rockwell
CVE-2025-13823Micro820®, Micro850®, Micro870® – Specialized Fuzzing Vulnerabilities
High 7.1
In plain English
A high-severity security flaw in Micro820®, Micro850®, Micro870® from Rockwell Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.2%top 90.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Rockwell Automation | Micro820®, Micro850®, Micro870® | V23.011 |
Weakness: CWE-1395 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N