How severe is CVE-2021-40422?

CVE-2021-40422 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-40422 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40422?

CVE-2021-40422 affects Swiftsensors Sg3-1010 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40422?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-40422 published?

CVE-2021-40422 was published on 2022-04-14 and last updated on 2026-06-17.

CVE-2021-40422

CVE-2021-40422 is a critical-severity vulnerability in Swiftsensors Sg3-1010 Firmware with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 10.0
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Swiftsensors Sg3-1010 Firmware
Published: 2022-04-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-40422?: CVE-2021-40422 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-40422 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40422?: CVE-2021-40422 affects Swiftsensors Sg3-1010 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40422?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-40422 published?: CVE-2021-40422 was published on 2022-04-14 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1431

Affected products (1)

cpe:2.3:o:swiftsensors:sg3-1010_firmware:-:*:*:*:*:*:*:*

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