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CVE-2026-12656— 1732E ArmorBlock® - Multiple Vulnerabilities

Quick assessment

Affected
Rockwell Automation 1732E ArmorBlock® I/O
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.

受影响的产品和版本中存在拒绝服务（DoS）安全漏洞。该安全问题的根本原因在于对网络风暴流量处理不当，可能导致通信中断、设备故障，并影响开放的 TCP 和 UDP 端口。需要通过断电重启（power cycle）才能使设备恢复到正常运行状态。

CVSS 8.7 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Rockwell Automation 1732E ArmorBlock® I/O ≤ 3.012 affected
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I. Basic Information for CVE-2026-12656

Vulnerability Information
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Vulnerability Title
1732E ArmorBlock® - Multiple Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
A denial-of-service security issue exists in the affected product and version. The security issue stems from improper handling of network storm traffic, which can interrupt communication, cause device faults, and affect open TCP and UDP ports. A power cycle is required to recover the device to its normal state.
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
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Rockwell Automation 1732E ArmorBlock® I/O 0 ~ 3.012 -

II. Public POCs for CVE-2026-12656

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III. Intelligence Information for CVE-2026-12656

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Vendor Advisories for CVE-2026-12656 (1)

IV. Related Vulnerabilities

Same product: 1732E ArmorBlock® I/O
Same vendor: Rockwell Automation
Same weakness: CWE-770

V. Comments for CVE-2026-12656

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