Is CVE-2020-28373 actively exploited?

No active exploitation of CVE-2020-28373 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-28373 be exploited remotely?

Partially. CVE-2020-28373 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2020-28373?

CVE-2020-28373 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2020-28373

CWE-787Published: November 9, 2020· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

upnpd on certain NETGEAR devices allows remote (LAN) attackers to execute arbitrary code via a stack-based buffer overflow. This affects R6400v2 V1.0.4.102_10.0.75, R6400 V1.0.1.62_1.0.41, R7000P V1.3.2.126_10.1.66, XR300 V1.0.3.50_10.3.36, R8000 V1.0.4.62, R8300 V1.0.2.136, R8500 V1.0.2.136, R7300DST V1.0.0.74, R7850 V1.0.5.64, R7900 V1.0.4.30, RAX20 V1.0.2.64, RAX80 V1.0.3.102, and R6250 V1.0.4.44.

NVD Source

Technical Analysis

CVE-2020-28373 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

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 8.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.