CVE-2021-31642

MEDIUM 6.5CVE-2021-31642 · Published 01/06/2021 · updated 17/06/2026

In short

CVE-2021-31642 is a MEDIUM (CVSS 6.5) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 43.7%, higher than 98.7% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

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.

References

packetstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.html · Exploit
gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices · Exploit
seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks · Exploit
chiyu-tech.com/msg/message-Firmware-update-87.html · Vendor Advisory

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