CVE-2025-12011

CompactLogix ®, ControlLogix ®, Compact GuardLogix ® and GuardLogix ® Buffer Overflow

State: Published
Severity: 9.2 Critical
Published: Jul 14, 2026
Updated: Aug 18, 2026
Reserved: Oct 21, 2025

Description

A denial-of-service issue exists in 5370/5570 controllers. This vulnerability could potentially allow a remote user to load an invalid project, causing the device to enter a major non-recoverable fault (MNRF).

Scores

CVSS	Score	Vector	Source
4.0	9.2 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H	Rockwell

Weaknesses

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

Product	Versions
CompactLogix® 5370 Compact GuardLogix® 5370 ControlLogix® 5570 GuardLogix® 5570Rockwell Automation	35.015 and earlierAffected

References

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1781.html

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