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CVE-2026-0646— Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities

AI Predicted 7.5 Difficulty: Easy EPSS 0.30% · P22

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProductVersion RangeStatus
Rockwell AutomationFLEX I/O EtherNet/IP Adapters2.012affected
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I. Basic Information for CVE-2026-0646

Vulnerability Information
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Vulnerability Title
Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities
Source: NVD (National Vulnerability Database)
Vulnerability Description
A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests. This vulnerability can result in the adapter faulting and losing connection to its associated I/O modules, requiring a manual reset to recover.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Rockwell AutomationFLEX I/O EtherNet/IP Adapters 2.012 -

II. Public POCs for CVE-2026-0646

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III. Intelligence Information for CVE-2026-0646

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Vendor Advisories for CVE-2026-0646 (1)

Same Patch Batch · Rockwell Automation · 2026-06-16 · 7 CVEs total

CVE-2026-0647Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities
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CVE-2026-9307Rockwell Automation CompactLogix 5370 Controllers – Multiple Vulnerabilities
CVE-2025-11694Rockwell Automation CompactLogix 5370 Controllers – Multiple Vulnerabilities
CVE-2025-14272Rockwell Automation FactoryTalk Analytics PavilionX
CVE-2025-13036Rockwell Automation FactoryTalk Historian Site Edition - Authentication Bypass

IV. Related Vulnerabilities

Same product: FLEX I/O EtherNet/IP Adapters
Same vendor: Rockwell Automation
Same weakness: CWE-401

V. Comments for CVE-2026-0646

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