CVE-2017-12093

MediumCVSS 5.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-400

Affected software

Vendor	Product	Versions
Talos	Allen Bradley	Allen Bradley Micrologix 1400 Series B FRN 21.2, Allen Bradley Micrologix 1400 Series B FRN 21.0, Allen Bradley Micrologix 1400 Series B FRN 15

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0445Exploit, Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0445Exploit, Third Party Advisory

Timeline

Published: Apr 5, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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