CVE-2026-12656: CWE-770: Allocation of Resources Without Limits or Throttling in Rockwell Automation 1732E ArmorBlock® I/O
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.
CVSS v4.0
Score 8.7high
Affected software
Rockwell Automation
1732E ArmorBlock® I/O
pkg:github/rockwellautomation/1732E-ArmorBlock-IORun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-770) involves allocation of resources without limits or throttling in Rockwell Automation 1732E ArmorBlock® I/O devices, leading to denial-of-service conditions. Specifically, the affected devices improperly handle network storm traffic, which interrupts communication channels and causes faults. The issue affects versions from 0 up to and including 3.012. No patch or remediation details are provided in the available data.
Potential Impact
Exploitation of this vulnerability can cause denial of service by interrupting device communication and causing faults, impacting TCP and UDP ports. Affected devices require a power cycle to restore normal operation, potentially causing operational downtime.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider network-level controls to limit storm traffic targeting these devices. No official fix or workaround is provided in the current data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Rockwell
- Date Reserved
- 2026-06-18T18:49:04.257Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ace415b2cdf04f656747da9
Added to database: 10/13/2026, 14:34:03 UTC
Last enriched: 10/13/2026, 14:50:10 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 7
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