Is CVE-2020-12493 actively exploited?

No active exploitation of CVE-2020-12493 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-12493 be exploited remotely?

Yes. CVE-2020-12493 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-12493?

CVE-2020-12493 has a CVSS score of 10.0 (CRITICAL).

HOME VULNERABILITIESCVE-2020-12493

CRITICAL

CVE-2020-12493

CWE-284Published: May 29, 2020· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

An open port used for debugging in SWARCOs CPU LS4000 Series with versions starting with G4... grants root access to the device without access control via network. A malicious user could use this vulnerability to get access to the device and disturb operations with connected devices.

NVD Source

Technical Analysis

CVE-2020-12493 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.