CVE-2021-40422

Name: CVE-2021-40422
Creator: NVD / NIST
Published: 2022-04-14T20:15:08.98+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 10/10EPSS 5.65%

Last modified Jun 17, 2026

CVE-2021-40422 is a critical-severity vulnerability rated 10/10 on the CVSS scale. 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. EPSS estimates a 5.65% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

10/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

5.65%

92.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Swiftsensors	Sg3-1010 Firmware	All versions

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1431Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1431Exploit, Third Party Advisory

Timeline

Published: Apr 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40422?

How severe is CVE-2021-40422?

CVE-2021-40422 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 5.65% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40422?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40422?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST