CVE-2025-4076

A vulnerability classified as critical has been found in LB-LINK BL-AC3600 up to 1.0.22. This affects the function easy_uci_set_option_string_0 of the file /cgi-bin/lighttpd.cgi of the component Password Handler. The manipulation of the argument routepwd leads to command injection. It is possible to initiate the attack 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.

CVSS v3 6.3 MEDIUM
CVSS v2.0 6.5 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/GrayLxton/BLink_poc
https://github.com/GrayLxton/BLink_poc/blob/main/poc.py
https://vuldb.com/?ctiid.306513
https://vuldb.com/?id.306513
https://vuldb.com/?submit.560232

Configurations

No configuration.

History

02 May 2025, 13:53

Type	Values Removed	Values Added
Summary		(es) Se ha detectado una vulnerabilidad crítica en LB-LINK BL-AC3600 hasta la versión 1.0.22. Esta afecta a la función easy_uci_set_option_string_0 del archivo /cgi-bin/lighttpd.cgi del componente Password Handler. La manipulación del argumento routepwd provoca la inyección de comandos. Es posible iniciar el ataque de forma remota. Se ha hecho público el exploit y puede que sea utilizado. Se contactó al proveedor con antelación sobre esta divulgación, pero no respondió.

29 Apr 2025, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-04-29 18:15

Updated : 2025-05-02 13:53

NVD link : CVE-2025-4076

Mitre link : CVE-2025-4076

CVE.ORG link : CVE-2025-4076

JSON object : View

Products Affected

No product.

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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