Vulnerability · Published Jan 20, 2026 · Assigned by Rockwell
CVE-2025-11743Rockwell Automation CompactLogix® 5370 Denial of Service Vulnerability
High 7.1
In plain English
A high-severity security flaw in CompactLogix® 5370 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 8% of all known vulnerabilities).
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.2%top 92.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A denial-of-service security issue in the affected product. The security issue occurs when a malformed CIP forward open message is sent. This could result in a major nonrecoverable fault a restart is required to recover.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Rockwell Automation | CompactLogix® 5370 | Version 34.013 and prior, Version 35.012 and prior, Version 36.011 |
Weakness: CWE-1284 · 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