Is CVE-2020-9477 actively exploited?

No active exploitation of CVE-2020-9477 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-9477 be exploited remotely?

Yes. CVE-2020-9477 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-9477?

CVE-2020-9477 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-9477

CWE-319Published: March 4, 2020· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

An issue was discovered on HUMAX HGA12R-02 BRGCAA 1.1.53 devices. A vulnerability in the authentication functionality in the web-based interface could allow an unauthenticated remote attacker to capture packets at the time of authentication and gain access to the cleartext password. An attacker could use this access to create a new user account or control the device.

NVD Source

Technical Analysis

CVE-2020-9477 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.