CVE-2025-7574— LB-LINK BL-WR9000 Web Interface lighttpd.cgi restore improper authentication
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I. Basic Information for CVE-2025-7574
Vulnerability Information
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Vulnerability Title
LB-LINK BL-WR9000 Web Interface lighttpd.cgi restore improper authentication
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability, which was classified as critical, was found in LB-LINK BL-AC1900, BL-AC2100_AZ3, BL-AC3600, BL-AX1800, BL-AX5400P and BL-WR9000 up to 20250702. Affected is the function reboot/restore of the file /cgi-bin/lighttpd.cgi of the component Web Interface. The manipulation leads to improper authentication. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
LB-LINK多款产品 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LB-LINK BL-AC1900等都是中国必联（LB-LINK）公司的产品。LB-LINK BL-AC1900是一款无线路由器。LB-LINK BL-AC2100是一款无线 Wi-Fi 6 路由器。LB-LINK BL-AC3600是一款双频千兆无线路由器，支持2.4GHz和5GHz频段，适用于家庭和小型办公室网络。 LB-LINK多款产品存在安全漏洞，该漏洞源于文件/cgi-bin/lighttpd.cgi中函数reboot/restore的错误操作导致身份验证不当。以下产品及版本受到影响：BL-AC
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)
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Affected Products
II. Public POCs for CVE-2025-7574
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Same Patch Batch · LB-LINK · 2025-07-14 · 5 CVEs total
| CVE-2025-7564 | 7.8 HIGH | LB-LINK BL-AC3600 shadow hard-coded credentials |
| CVE-2025-7565 | 5.3 MEDIUM | LB-LINK BL-AC3600 Web Management Interface lighttpd.cgi geteasycfg information disclosure |
| CVE-2025-7573 | 5.3 MEDIUM | LB-LINK BL-WR9000 lighttpd.cgi bs_GetManPwd information disclosure |
| CVE-2025-7572 | 5.3 MEDIUM | LB-LINK BL-WR9000 lighttpd.cgi bs_GetHostInfo information disclosure |
IV. Related Vulnerabilities
Same vendor: LB-LINK
- CVE-2026-4228
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LB-LINK BL-WR9000 get_hidessid_cfg sub_44D844 buffer overflo - CVE-2026-4226
LB-LINK BL-WR9000 get_virtual_cfg sub_44E8D0 stack-based ove - CVE-2025-9580
LB-LINK BL-X26 HTTP set_blacklist os command injection - CVE-2025-9579
LB-LINK BL-X26 HTTP set_hidessid_cfg os command injection
Same weakness: CWE-287
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