What is CVE-2021-40422?

CVE-2021-40422 is a critical-severity vulnerability in Swift Sensors Gateway, classified under Use of Hard-coded Credentials. CVSS score: 10.0/10. Published 2022-04-14.

How severe is CVE-2021-40422?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Vulnerability in Swift Sensors Gateway

CVE-2021-40422

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.

Published 2022-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.062 (93.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.058 · newest: 0.062 · change: +0.004

Affected products

Swift Sensors Gateway — versions SG3-1010
Swiftsensors Sg3-1010
Swiftsensors Sg3-1010 Firmware

Weakness classification (CWE)

References

talosintelligence.com/vulnerability_reports/TALOS-2021-1431 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-40422?: CVE-2021-40422 is a critical-severity vulnerability in Swift Sensors Gateway, classified under Use of Hard-coded Credentials. CVSS score: 10.0/10. Published 2022-04-14.
How severe is CVE-2021-40422?: Critical severity. CVSS v3 base score is 10.0 out of 10.