CVE-2021-47741 — ZBL EPON ONU Broadband Router V100R001 Privilege Escalation via Configuration Endpoint

2026-10-10T07:25:36.165934+00:00

Affected: Zblchina ZBL EPON ONU Broadband Router

ZBL EPON ONU Broadband Router V100R001 contains a privilege escalation vulnerability that allows limited administrative users to elevate access by sending requests to configuration endpoints. Attackers can exploit the vulnerability by accessing the configuration backup or password page to disclose the super user password and gain additional privileged functionalities.

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CVE-2021-47741 — ZBL EPON ONU Broadband Router V100R001 Privilege Escalation via Configuration Endpoint