CVE-2021-31252 (bf-430_firmware, bf-431_firmware, bf-450m_firmware, bf-630_firmware, bf-631w_firmware, bf-830w_firmware, semac_d1_firmware, semac_d2_firmware, semac_d2_n300_firmware, semac_d4_firmware, semac_s1_osdp_firmware, semac_s2_firmware, semac_s3v3_firmware, webpass_firmware)

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.