Is CVE-2017-14471 actively exploited?

No active exploitation of CVE-2017-14471 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-14471 be exploited remotely?

Yes. CVE-2017-14471 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-14471?

CVE-2017-14471 has a CVSS score of 10.0 (CRITICAL).

HOME VULNERABILITIESCVE-2017-14471

CRITICAL

CVE-2017-14471

NVD-CWE-noinfoPublished: April 5, 2018· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

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 Codes: 0023, 002e, and 0037 Fault Type: Recoverable Description: The STI, EII, and HSC function files contain bits signifying whether or not a fault has occurred. Additionally there is a bit signaling the module to auto start. When these bits are set for any of the three modules and the device is moved into a run state, a fault is triggered.

NVD Source

Technical Analysis

CVE-2017-14471 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 10.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.