CVE-2026-9637 PUBLISHED

CompactLogix® 5380 / ControlLogix® 5580 - Multiple Vulnerabilities

Assigner: Rockwell
Reserved: 26.05.2026 Published: 01.09.2026 Updated: 01.09.2026

A denial-of-service security issue exists in the affected Logix platforms listed in the table above. The security issue stems from improper validation of input length during CIP message processing. This can result in a major nonrecoverable fault (MNRF), requiring a power cycle to recover

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Rockwell Automation
Product	CompactLogix® 5380 / ControlLogix® 5580
Versions	Default: unaffected Version V33 and prior, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 is affected

References

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1792.html

Problem Types

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE