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CVE-2021-47741

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CVE-2021-47741

Published: Dec 31, 2025

Modified: Jan 2, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

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.

VendorProductVersions

Zblchina

ZBL EPON ONU Broadband Router

affected
1.0

Weaknesses (CWE)

CWE-522

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

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