CVE-2021-31643

MEDIUM 5.4CVE-2021-31643 · Published 01/06/2021 · updated 17/06/2026

In short

CVE-2021-31643 is a MEDIUM (CVSS 5.4) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 88.4%, higher than 99.8% 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

An XSS vulnerability exists in several IoT devices from CHIYU Technology, including SEMAC, Biosense, BF-630, BF-631, and Webpass due to a lack of sanitization on the component if.cgi - username parameter.

References

packetstormsecurity.com/files/162887/CHIYU-IoT-Cross-Site-Scripting.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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