MEDIUM

CVE-2021-31642

CVSS v3

6.5

MEDIUM

EPSS Score

43.7 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-31642 yet.

Full record on NVD

Description

A denial of service condition exists after an integer overflow in several IoT devices from CHIYU Technology, including BIOSENSE, Webpass, and BF-630, BF-631, and SEMAC. The vulnerability can be explored by sending an unexpected integer (> 32 bits) on the page parameter that will crash the web portal and making it unavailable until a reboot of the device.

Technical details

Published: 2021-06-01
Exploit-DB: EDB-49937

Frequently asked questions

What is CVE-2021-31642?

Is CVE-2021-31642 actively exploited?

Active exploitation of CVE-2021-31642 has not been confirmed. Its EPSS score was 43.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-31642?

CVE-2021-31642 has a CVSS v3 base score of 6.5 (MEDIUM severity).

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