CVE-2025-7572: LB-LINK BL-WR9000 lighttpd.cgi bs_GetHostInfo information disclosure

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-14 · updated 2026-06-17
Weakness: CWE-200

Description

A vulnerability 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. This vulnerability affects the function bs_GetHostInfo in the library libblinkapi.so of the file /cgi-bin/lighttpd.cgi. The manipulation leads to information disclosure. The attack can 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: 20250702
LB-LINK BL-AC2100_AZ3: 20250702
LB-LINK BL-AC3600: 20250702
LB-LINK BL-AX1800: 20250702
LB-LINK BL-AX5400P: 20250702
LB-LINK BL-WR9000: 20250702

References

https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Information_Exposure_Vulnerabilities_in_Various_Blink_Router_Models.md
https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Information_Exposure_Vulnerabilities_in_Various_Blink_Router_Models.md#poc
https://vuldb.com/?ctiid.316270
https://vuldb.com/?id.316270
https://vuldb.com/?submit.608009

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