Is CVE-2021-40422 actively exploited?

No active exploitation of CVE-2021-40422 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-40422 be exploited remotely?

Yes. CVE-2021-40422 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-40422?

CVE-2021-40422 has a CVSS score of 10.0 (CRITICAL).

HOME VULNERABILITIESCVE-2021-40422

CRITICAL

CVE-2021-40422

CWE-798Published: April 14, 2022· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

An authentication bypass vulnerability exists in the device password generation functionality of Swift Sensors Gateway SG3-1010. A specially-crafted network request can lead to remote code execution. An attacker can send a sequence of requests to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2021-40422 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 10.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.