CVE-2021-47741

CVE-2021-47741 is a privilege escalation vulnerability in the ZBL EPON ONU Broadband Router V100R001. Limited administrative users can exploit this by accessing specific configuration endpoints, such as the backup or password page, to disclose the super user password and gain full administrative control. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, leading to high confidentiality impact. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.