Is CVE-2021-45557 actively exploited?

No active exploitation of CVE-2021-45557 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-45557 be exploited remotely?

Yes. CVE-2021-45557 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-45557?

CVE-2021-45557 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2021-45557

HIGH

CVE-2021-45557

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

8.8

CVSS v3.1

Official Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects GC108P before 1.0.8.2, GC108PP before 1.0.8.2, GS108Tv3 before 7.0.7.2, GS110TPv3 before 7.0.7.2, GS110TPP before 7.0.7.2, GS110TUP before 1.0.5.3, GS710TUP before 1.0.5.3, GS308T before 1.0.3.2, GS310TP before 1.0.3.2, GS710TUP before 1.0.5.3, GS716TP before 1.0.4.2, GS716TPP before 1.0.4.2, GS724TPP before 2.0.6.3, GS724TPv2 before 2.0.6.3, GS724TPP before 2.0.6.3, GS728TPPv2 before 6.0.8.2, GS728TPv2 before 6.0.8.2, GS752TPv2 before 6.0.8.2, GS752TPP before 6.0.8.2, GS750E before 1.0.1.10, MS510TXM before 1.0.4.2, and MS510TXUP before 1.0.4.2.

NVD Source

Technical Analysis

CVE-2021-45557 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.