CVE:CVE-2021-33046
CNNVD:CNNVD-202201-1059
Dahua  IPC等都是中国大华（Dahua）公司的产品。Dahua  IPC是Dahua Vto是一系列对讲设备。Dahua Vth是一系列数字室内机。
多款 Dahua 产品中存在授权问题漏洞，该漏洞源于产品未对重置密码添加有效权限限制。攻击者可通过该漏洞重置设备密码。 以下产品和版本受到影响：Dahua Xvr,Dahua Nvr,Dahua Tpc,Dahua Sd,Dahua Vth,Dahua Vto,Dahua  IPC。
solution:Upgrade dahuasecurity ipc-hx1xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity ipc-hx2xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity ipc-hx3xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity ipc-hx5(4)(3)xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity ipc-hx5xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity sd1a1_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity sd22_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity sd49_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity sd50_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity sd52c_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity sd6al_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity tpc-bf1241_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity tpc-bf2221_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity tpc-bf5x01_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity tpc-pt8x21x_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity tpc-sd2221_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity tpc-sd8x21_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity nvr1xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity nvr2xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity nvr4xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity nvr5xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity xvr4xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity xvr5xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity xvr7xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity hcvr7xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity hcvr8xxx_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity vtox20xf_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]; Upgrade dahuasecurity asc2204c_firmware to a higher version than 2021-7,and avoid the version [2017-7,2021-7]