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CVE-2026-0647— Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities

Quick assessment

Affected
Rockwell Automation FLEX I/O EtherNet/IP Adapters
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 FLEX I/O EtherNet/IP Adapters是美国Rockwell Automation基金会的一个工业自动化以太网适配器模块。 Rockwell Automation FLEX I/O EtherNet/IP Adapters 2.012版本存在授权问题漏洞，该漏洞源于身份验证不当，可能导致未经身份验证的攻击者通过发送特制HTTP GET请求更改设备Web界面密码，从而导致未经授权访问、账户接管及设备嵌入式Web服务器可用性丧失。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.43% · P36

Affected Version Matrix 1

VendorProduct Version RangeStatus
Rockwell Automation FLEX I/O EtherNet/IP Adapters 2.012 affected
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I. Basic Information for CVE-2026-0647

Vulnerability Information
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Vulnerability Title
Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
An improper authentication security issue exists within the 1794-AENTR adapter's embedded web server. The vulnerability allows an unauthenticated attacker to change the device's web interface password by sending a crafted HTTP GET request to a specific endpoint, without any prior authentication being required. If exploited, this could lead to unauthorized access, account takeover, and loss of the device’s embedded web server’s availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Rockwell Automation FLEX I/O EtherNet/IP Adapters 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rockwell Automation FLEX I/O EtherNet/IP Adapters是美国Rockwell Automation基金会的一个工业自动化以太网适配器模块。 Rockwell Automation FLEX I/O EtherNet/IP Adapters 2.012版本存在授权问题漏洞，该漏洞源于身份验证不当，可能导致未经身份验证的攻击者通过发送特制HTTP GET请求更改设备Web界面密码，从而导致未经授权访问、账户接管及设备嵌入式Web服务器可用性丧失。
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 FLEX I/O EtherNet/IP Adapters 2.012 -

II. Public POCs for CVE-2026-0647

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III. Intelligence Information for CVE-2026-0647

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Vendor Advisories for CVE-2026-0647 (1)

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

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

Same product: FLEX I/O EtherNet/IP Adapters
Same vendor: Rockwell Automation
Same weakness: CWE-306

V. Comments for CVE-2026-0647

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