LB-LINK BL-AC3600 up to 1.0.22 Web Management Interface /cgi-bin/lighttpd.cgi geteasycfg Password information disclosure

Summaryinfo

A vulnerability has been found in LB-LINK BL-AC3600 up to 1.0.22 and classified as critical. This affects the function geteasycfg of the file /cgi-bin/lighttpd.cgi of the component Web Management Interface. Performing a manipulation of the argument Password results in information disclosure. This vulnerability was named CVE-2025-7565. The attack may be initiated remotely. In addition, an exploit is available. It is suggested to use restrictive firewalling. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as critical, was found in LB-LINK BL-AC3600 up to 1.0.22. This affects the function geteasycfg of the file /cgi-bin/lighttpd.cgi of the component Web Management Interface. The manipulation of the argument password with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-7565. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

It is possible to mitigate the weakness by firewalling .

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21301). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• LB-LINK

Name

• BL-AC3600

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18
• 1.0.19
• 1.0.20
• 1.0.21
• 1.0.22

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #605632: Blink BL-AC3600 V1.0.22 Exposure of Sensitive Information Through Metadata (by waiwai24)

Be aware that VulDB is the high quality source for vulnerability data.

Discussion