CVE-2021-31250

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 79.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-06-04 · updated 2026-06-17
Weakness: CWE-79

Description

Multiple storage XSS vulnerabilities were discovered on BF-430, BF-431 and BF-450M TCP/IP Converter devices from CHIYU Technology Inc due to a lack of sanitization of the input on the components man.cgi, if.cgi, dhcpc.cgi, ppp.cgi.

Affected products

Chiyu-Tech Bf-430 Firmware: all versions
Chiyu-Tech Bf-431 Firmware: all versions
Chiyu-Tech Bf-450M Firmware: all versions

References

https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31250
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
https://www.chiyu-tech.com/msg/message-Firmware-update-87.htm
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31250
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
https://www.chiyu-tech.com/msg/message-Firmware-update-87.htm

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