CVE-2025-7564: bl-ac3600 Hardcoded Password — Exploit

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.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-259 CWE-259

CWE-798 CWE-798

Affected Products

Vendor	Product	Versions
lb-link	bl-ac3600_firmware	< 1.0.22
lb-link	bl-ac3600	All

References

Exploits

https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Hardcoded_Credentials_in_BL-AC3600_Routers.md https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Hardcoded_Credentials_in_BL-AC3600_Routers.md#poc https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Hardcoded_Credentials_in_BL-AC3600_Routers.md https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Hardcoded_Credentials_in_BL-AC3600_Routers.md#poc

Other References

https://vuldb.com/?ctiid.316262 https://vuldb.com/?id.316262 https://vuldb.com/?submit.605630

Frequently Asked Questions

What is CVE-2025-7564? +

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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-7564? +

CVE-2025-7564 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-7564? +

CVE-2025-7564 affects products from lb-link, specifically: bl-ac3600, bl-ac3600_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-7564? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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