What’s Vulnerable › Vulnerabilities
CVE-2021-31252
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 28.6% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-06-04 · updated 2026-06-17
- Weakness: CWE-601
Description
An open redirect vulnerability exists in BF-630, BF-450M, BF-430, BF-431, BF631-W, BF830-W, Webpass, and SEMAC devices from CHIYU Technology that can be exploited by sending a link that has a specially crafted URL to convince the user to click on it.
Affected products
- Chiyu-Tech Bf-430 Firmware: all versions
- Chiyu-Tech Bf-431 Firmware: all versions
- Chiyu-Tech Bf-450M Firmware: all versions
- Chiyu-Tech Bf-630 Firmware: all versions
- Chiyu-Tech Bf-631W Firmware: all versions
- Chiyu-Tech Bf-830W Firmware: all versions
- Chiyu-Tech Semac D1 Firmware: all versions
- Chiyu-Tech Semac D2 Firmware: all versions
- Chiyu-Tech Semac D2 N300 Firmware: all versions
- Chiyu-Tech Semac D4 Firmware: all versions
- Chiyu-Tech Semac S1 Osdp Firmware: all versions
- Chiyu-Tech Semac S2 Firmware: all versions
- Chiyu-Tech Semac S3V3 Firmware: all versions
- Chiyu-Tech Webpass Firmware: all versions
References
- https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31252
- https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
- https://www.chiyu-tech.com/msg/message-Firmware-update-87.html
- https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31252
- https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
- https://www.chiyu-tech.com/msg/message-Firmware-update-87.html
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