PatchTheCVECVE-2021-40422: An authentication bypass vulnerability exists in the device password generation functionality of Swift Sensors
CVE-2021-40422 is a critical-severity flaw (CVSS 10.0) affecting sg3-1010 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- EPSS top 7%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-40422?
sg3-1010 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2021-40422 being exploited?
CVE-2021-40422 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-40422 affect?
CVE-2021-40422 affects sg3-1010 firmware. Severity is critical (CVSS 10.0). 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 reque
How urgent is CVE-2021-40422?
Priority 68/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action