Rockwell Automation Logix Platform

View CSAF Summary The following versions of Rockwell Automation Logix Platform are affected: ControlLogix 5580 <=V33, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 (CVE-2026-9637, CVE-2026-9637, CVE-2026-9637, CVE-2026-9637) CompactLogix 5380 <=V33, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 (CVE-2026-9637, CVE-2026-9637, CVE-2026-9637, CVE-2026-9637) GuardLogix 5580 <=V33, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 (CVE-2026-9637, CVE-2026-9637, CVE-2026-9637, CVE-2026-9637) Compact GuardLogix 5380 <=V33, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 (CVE-2026-9637, CVE-2026-9637, CVE-2026-9637, CVE-2026-9637) CVSS Vendor Equipment Vulnerabilities v3 7.5 Rockwell Automation Rockwell Automation Logix Platform Improper Restriction of Operations within the Bounds of a Memory Buffer Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2026-9637 A denial-of-service vulnerability exists in the affected Logix platforms due to improper validation of input length during CIP message processing. This can result in a major nonrecoverable fault (MNRF), requiring a power cycle to recover. View CVE Details Affected Products Rockwell Automation Logix Platform Vendor: Rockwell Automation Product Version: Rockwell Automation ControlLogix 5580 <=V33, Rockwell Automation ControlLogix 5580 V34.011-V34.014, Rockwell Automation ControlLogix 5580 V35.011-V35.013, Rockwell Automation ControlLogix 5580 V36.011-V36.012, Rockwell Automation CompactLogix 5380 <=V33, Rockwell Automation CompactLogix 5380 V34.011-V34.014, Rockwell Automation CompactLogix 5380 V35.011-V35.013, Rockwell Automation CompactLogix 5380 V36.011-V36.012, Rockwell Automation GuardLogix 5580 <=V33, Rockwell Automation GuardLogix 5580 V34.011-V34.014, Rockwell Automation GuardLogix 5580 V35.011-V35.013, Rockwell Automation GuardLogix 5580 V36.011-V36.012, Rockwell Automation Compact GuardLogix 5380 <=V33, Rockwell Automation Compact GuardLogix 5380 V34.011-V34.014, Rockwell Automation Compact GuardLogix 5380 V35.011-V35.013, Rockwell Automation Compact GuardLogix 5380 V36.011-V36.012 Product Status: known_affected Remediations Vendor fix Rockwell Automation recommends users update to firmware version V37.011. Vendor fix Rockwell Automation recommends users update to firmware version 34.015. Vendor fix Rockwell Automation recommends users update to firmware version 35.014. Vendor fix Rockwell Automation recommends users update to firmware version 36.013. Mitigation Customers using the affected software who are not able to upgrade to one of the corrected versions should use Rockwell Automation's security best practices. Relevant CWE: CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 4.0 8.7 HIGH 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 Acknowledgments Rockwell Automation reported this vulnerability to CISA Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis a