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CVE-2017-14464

CRITICAL

An exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and before. A specially crafted packet can cause a read or write operation resulting in disclosure of sensitive information, modification of settings, or modification of ladder logic. An attacker can send unauthenticated packets to trigger this vulnerability.Required Keyswitch State: REMOTE or PROG Associated Fault Code: 0001 Fault Type: Non-User Description: A fault state can be triggered by setting the NVRAM/memory module user program mismatch bit (S2:9) when a memory module is NOT installed.

Published: Apr 5, 2018 Modified: Jun 17, 2026
NVD-CWE-noinfo

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: NONE Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

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

Affected Products (1)

Vendor Product Version
rockwellautomation micrologix_1400_b_firmware *

GitHub Security Advisory GHSA-j4x2-6mhf-rwcj

An exploitable access control vulnerability exists in the data, program, and function file...

Risk Scores

CVSS Score 9.8 / 10
EPSS Score 36.84%

Top 2% most likely to be exploited

Threat Score 50.3 / 100

Data Sources

NVD EPSS GitHub