Is CVE-2020-3586 actively exploited?

No active exploitation of CVE-2020-3586 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-3586 be exploited remotely?

Yes. CVE-2020-3586 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-3586?

CVE-2020-3586 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-3586

CWE-78Published: November 18, 2020· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability in the web-based management interface of Cisco DNA Spaces Connector could allow an unauthenticated, remote attacker to execute arbitrary commands on an affected device. The vulnerability is due to insufficient validation of user-supplied input in the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary commands on the underling operating system with privileges of the web-based management application, which is running as a restricted user. This could result in changes being made to pages served by the web-based management application impacting the integrity or availability of the web-based management application.

NVD Source

Technical Analysis

CVE-2020-3586 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 9.8.