Is CVE-2020-3175 actively exploited?

No active exploitation of CVE-2020-3175 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-3175 be exploited remotely?

Yes. CVE-2020-3175 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-3175?

CVE-2020-3175 has a CVSS score of 8.6 (HIGH).

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HIGH

CVE-2020-3175

CWE-664Published: February 26, 2020· Updated: Jun 17, 2026

8.6

CVSS v3.1

Official Description

A vulnerability in the resource handling system of Cisco NX-OS Software for Cisco MDS 9000 Series Multilayer Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper resource usage control. An attacker could exploit this vulnerability by sending traffic to the management interface (mgmt0) of an affected device at very high rates. An exploit could allow the attacker to cause unexpected behaviors such as high CPU usage, process crashes, or even full system reboots of an affected device.

NVD Source

Technical Analysis

CVE-2020-3175 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 8.6.

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.