Is CVE-2020-6086 actively exploited?

No active exploitation of CVE-2020-6086 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-6086 be exploited remotely?

Yes. CVE-2020-6086 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-6086?

CVE-2020-6086 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2020-6086

CWE-120Published: October 14, 2020· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

An exploitable denial of service vulnerability exists in the ENIP Request Path Data Segment functionality of Allen-Bradley Flex IO 1794-AENT/B. A specially crafted network request can cause a loss of communications with the device resulting in denial-of-service. An attacker can send a malicious packet to trigger this vulnerability.If the Simple Segment Sub-Type is supplied, the device treats the byte following as the Data Size in words. When this value represents a size greater than what remains in the packet data, the device enters a fault state where communication with the device is lost and a physical power cycle is required.

NVD Source

Technical Analysis

CVE-2020-6086 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 availability disruption (denial of service), with a CVSS base score of 7.5.