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CVE-2026-9637— CompactLogix® 5380 / ControlLogix® 5580 - Multiple Vulnerabilities

Quick assessment

Affected
Rockwell Automation CompactLogix® 5380 / ControlLogix® 5580
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rockwell Automation CompactLogix 5380是美国Rockwell Automation基金会的一款可编程自动化控制器。 Rockwell Automation CompactLogix 5380 V33及之前版本、V34.011版本至V34.014版本、V35.011版本至V35.013版本和V36.011版本至V36.012版本存在缓冲区错误漏洞，该漏洞源于CIP消息处理过程中对输入长度验证不当，可能导致重大不可恢复故障，需要断电重启才能恢复。

CVSS 8.7 · High EPSS 0.43% · P36

Affected Version Matrix 1

VendorProduct Version RangeStatus
Rockwell Automation CompactLogix® 5380 / ControlLogix® 5580 V33 and prior, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 affected
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I. Basic Information for CVE-2026-9637

Vulnerability Information
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Vulnerability Title
CompactLogix® 5380 / ControlLogix® 5580 - Multiple Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Rockwell Automation CompactLogix 5380 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rockwell Automation CompactLogix 5380是美国Rockwell Automation基金会的一款可编程自动化控制器。 Rockwell Automation CompactLogix 5380 V33及之前版本、V34.011版本至V34.014版本、V35.011版本至V35.013版本和V36.011版本至V36.012版本存在缓冲区错误漏洞，该漏洞源于CIP消息处理过程中对输入长度验证不当，可能导致重大不可恢复故障，需要断电重启才能恢复。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Rockwell Automation CompactLogix® 5380 / ControlLogix® 5580 V33 and prior, V34.011-V34.014, V35.011-V35.013, V36.011-V36.012 -

II. Public POCs for CVE-2026-9637

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III. Intelligence Information for CVE-2026-9637

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Vendor Advisories for CVE-2026-9637 (1)

Same Patch Batch · Rockwell Automation · 2026-09-01 · 16 CVEs total

CVE-2026-9621 9.2 CRITICAL RSLinx Classic® - Multiple Vulnerabilities
CVE-2026-19472 8.7 HIGH Rockwell Automation ArmorStart® LT Denial Of Service
CVE-2026-84235 8.7 HIGH Rockwell Automation 1756-ENBT Denial of Service Vulnerability
CVE-2026-9622 8.7 HIGH RSLinx Classic® - Multiple Vulnerabilities
CVE-2026-9625 8.7 HIGH RSLinx Classic® - Multiple Vulnerabilities
CVE-2026-9624 8.7 HIGH RSLinx Classic® - Multiple Vulnerabilities
CVE-2024-7952 8.7 HIGH DataEdgePlatform DataMosaix™ Private Cloud
CVE-2024-7953 8.7 HIGH DataEdgePlatform DataMosaix™ Private Cloud
CVE-2025-12768 8.6 HIGH FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability
CVE-2026-16675 8.5 HIGH Rockwell Automation FactoryTalk® Activation Manager - Privilege Escalation
CVE-2026-12663 7.0 HIGH ControlFLASH ® – Improper Access Control
CVE-2026-9633 7.0 HIGH Redundancy Module Configuration Tool - Multiple Vulnerabilities
CVE-2026-9634 7.0 HIGH Redundancy Module Configuration Tool - Multiple Vulnerabilities
CVE-2026-19471 6.9 MEDIUM Rockwell Automation ArmorStart® LT Stored Cross-site scripting
CVE-2026-12661 4.8 MEDIUM FactoryTalk® Historian Machine Edition - Out-of-Bounds Write Vulnerability

IV. Related Vulnerabilities

Same vendor: Rockwell Automation
Same weakness: CWE-119

V. Comments for CVE-2026-9637

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