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CVE-2021-31642

MediumPublished

A denial of service condition exists after an integer overflow in several IoT devices from CHIYU Technology, including BIOSENSE, Webpass, and BF-630,...

Published: Jun 1, 2021
Updated: Aug 3, 2024
Assigning CNA: mitre
Evidence observed: Jun 3, 2021

Primary CVSS

6.5/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS probability estimate

43.7%

Moderate · next 30 days

Percentile: 98.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CHIYU IoT Devices - Denial of Service (DoS)Exploit
sirpedrotavares · hardware · Jun 3, 2021

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