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

Quick assessment

Affected
Zblchina ZBL EPON ONU Broadband Router
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ZBL EPON ONU Broadband Router V100R001是中国浙广科技（ZBL）公司的一款光网络终端路由器。 ZBL EPON ONU Broadband Router V100R001存在安全漏洞，该漏洞源于有限权限管理员用户可通过向配置端点发送请求提升访问权限，可能导致权限提升。

CVSS 7.5 · High EPSS 0.29% · P21
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I. Basic Information for CVE-2021-47741

Vulnerability Information
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Vulnerability Title
ZBL EPON ONU Broadband Router V100R001 Privilege Escalation via Configuration Endpoint
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的凭证保护机制
Source: CVE Program / CVE List V5
Vulnerability Title
ZBL EPON ONU Broadband Router V100R001 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZBL EPON ONU Broadband Router V100R001是中国浙广科技（ZBL）公司的一款光网络终端路由器。 ZBL EPON ONU Broadband Router V100R001存在安全漏洞，该漏洞源于有限权限管理员用户可通过向配置端点发送请求提升访问权限，可能导致权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zblchina ZBL EPON ONU Broadband Router 1.0 -

II. Public POCs for CVE-2021-47741

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III. Intelligence Information for CVE-2021-47741

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Exploits & Public PoCs for CVE-2021-47741 (1)

Other References for CVE-2021-47741 (1)

IV. Related Vulnerabilities

Same weakness: CWE-522