Is CVE-2021-45605 actively exploited?

No active exploitation of CVE-2021-45605 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-45605 be exploited remotely?

Yes. CVE-2021-45605 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-45605?

CVE-2021-45605 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2021-45605

HIGH

CVE-2021-45605

CWE-787Published: December 26, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R6400 before 1.0.1.68, R7000 before 1.0.11.116, R6900P before 1.3.3.140, R7000P before 1.3.3.140, R7900 before 1.0.4.38, RAX75 before 1.0.3.102, RAX80 before 1.0.3.102, and XR300 before 1.0.3.50.

NVD Source

Technical Analysis

CVE-2021-45605 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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.