CVE-2025-7573: Lb-Link Bl-AC1900

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability, which was classified as critical, has been found in LB-LINK BL-AC1900, BL-AC2100_AZ3, BL-AC3600, BL-AX1800, BL-AX5400P and BL-WR9000 up to 20250702. This issue affects the function bs_GetManPwd in the library libblinkapi.so of the file /cgi-bin/lighttpd.cgi. The manipulation leads to information disclosure. The attack may be initiated 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.

Affected products

• Lb-Link Bl-AC1900: version 20250702 only
• Lb-Link Bl-AC2100 AZ3: version 20250702 only
• Lb-Link Bl-AC3600: version 20250702 only
• Lb-Link Bl-AX1800: version 20250702 only
• Lb-Link Bl-AX5400P: version 20250702 only
• Lb-Link Bl-WR9000: version 20250702 only

Published 2025-07-14. Last modified 2026-06-17.