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Vulnerability record · CVE-2017-12093 · published 5 April 2018

CVE-2017-12093: Rockwellautomation micrologix 1400 b firmware uncontrolled resource consumption vulnerability

Rockwellautomation · Micrologix 1400 B Firmware

An exploitable insufficient resource pool vulnerability exists in the session communication functionality of Allen Bradley Micrologix 1400 Series B Firmware 21.2 and before. A specially crafted stream of packets can cause a flood of the session resource pool resulting in legitimate connections to the PLC being disconnected. An attacker can send unauthenticated packets to trigger this vulnerability.

5.3 CVSS 3.1 Medium EPSS 6.0% · top 6.9% CWE-400 · Uncontrolled resource consumption
5.3CVSS 3.1 base score, v2 5.0
6.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An exploitable insufficient resource pool vulnerability exists in the session communication functionality of Allen Bradley Micrologix 1400 Series B Firmware 21.2 and before. A specially crafted stream of packets can cause a flood of the session resource pool resulting in legitimate connections to the PLC being disconnected. An attacker can send unauthenticated packets to trigger this vulnerability.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0445 ExploitThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0445 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-6990Rockwellautomation micrologix 1400 a firmware hard-coded credentials vulnerabilityRockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix…EPSS 4.4%9.8CVE-2017-14470Rockwellautomation micrologix 1400 b firmware vulnerabilityAn exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400…EPSS 38%9.8CVE-2017-14471Rockwellautomation micrologix 1400 b firmware vulnerabilityAn exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400…EPSS 38%9.8CVE-2017-14472Rockwellautomation micrologix 1400 b firmware vulnerabilityAn exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400…EPSS 38%9.8CVE-2017-14473Rockwellautomation micrologix 1400 b firmware vulnerabilityAn exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400…EPSS 38%9.8CVE-2017-14462Rockwellautomation micrologix 1400 b firmware vulnerabilityAn exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400…EPSS 35%9.8CVE-2017-14463Rockwellautomation micrologix 1400 b firmware vulnerabilityAn exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400…EPSS 39%9.8CVE-2017-14464Rockwellautomation micrologix 1400 b firmware vulnerabilityAn exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400…EPSS 38%

Source: NIST National Vulnerability Database (record CVE-2017-12093), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.