Skip to content
Fencer Vulns
critical 10.0

CVE-2021-40422 json

An authentication bypass vulnerability exists in the device password generation functionality of Swift Sensors Gateway SG3-1010.

published 2022-04-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27599

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
6.2%
EPSS 6.2% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

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.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
18 mo ago

Exploit prediction

6.20% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2021-1431 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Swift Sensors Swift Sensors Gateway

Classification

Weakness
  • CWE-798 Use of Hard-coded Credentials
  • CWE-330 Use of Insufficiently Random Values

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.