CVE-2025-7564— LB-LINK BL-AC3600 shadow hard-coded credentials
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I. Basic Information for CVE-2025-7564
Vulnerability Information
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Vulnerability Title
LB-LINK BL-AC3600 shadow hard-coded credentials
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability, which was classified as critical, has been found in LB-LINK BL-AC3600 1.0.22. Affected by this issue is some unknown functionality of the file /etc/shadow. The manipulation with the input root:blinkadmin leads to hard-coded credentials. Local access is required to approach this attack. 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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用硬编码的凭证
Source: NVD (National Vulnerability Database)
Vulnerability Title
LB-LINK BL-AC3600 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LB-LINK BL-AC3600是中国必联（LB-LINK）公司的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 BL-AC3600 1.0.22版本存在安全漏洞，该漏洞源于文件/etc/shadow中硬编码凭据。
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
II. Public POCs for CVE-2025-7564
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Same Patch Batch · LB-LINK · 2025-07-14 · 5 CVEs total
| CVE-2025-7574 | 9.8 CRITICAL | LB-LINK BL-WR9000 Web Interface lighttpd.cgi restore improper authentication |
| 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
LB-LINK BL-WR9000 set_wifi sub_458754 command injection - CVE-2026-4227
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-798
- CVE-2026-7414
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D-Link DIR-456U A1 Hardcoded Telnet Backdoor Credentials - CVE-2026-42375
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V. Comments for CVE-2025-7564
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