Is CVE-2021-45617 actively exploited?

No active exploitation of CVE-2021-45617 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-45617 be exploited remotely?

Yes. CVE-2021-45617 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-45617?

CVE-2021-45617 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-45617

CWE-77Published: December 26, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, EAX20 before 1.0.0.48, EAX80 before 1.0.1.64, EX7500 before 1.0.0.72, R6400 before 1.0.1.68, R6900P before 1.3.2.132, R7000 before 1.0.11.116, R7000P before 1.3.2.132, R7900 before 1.0.4.38, R7960P before 1.4.1.66, R8000 before 1.0.4.66, RAX200 before 1.0.3.106, RS400 before 1.5.1.80, XR300 before 1.0.3.68, MK62 before 1.0.6.110, MR60 before 1.0.6.110, R6400v2 before 1.0.4.106, R8000P before 1.4.1.66, RAX20 before 1.0.2.64, RAX45 before 1.0.2.82, RAX80 before 1.0.3.106, MS60 before 1.0.6.110, R6700v3 before 1.0.4.106, R7900P before 1.4.1.66, RAX15 before 1.0.2.64, RAX50 before 1.0.2.82, RAX75 before 1.0.3.106, RBR750 before 3.2.16.22, RBR850 before 3.2.16.22, RBS750 before 3.2.16.22, RBS850 before 3.2.16.22, RBK752 before 3.2.16.22, and RBK852 before 3.2.16.22.

NVD Source

Technical Analysis

CVE-2021-45617 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.