CVE-2025-7574

LB-LINK BL-WR9000 Web Interface lighttpd.cgi restore improper authentication

Severity Score

8.9

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

NVD
MITRE

A vulnerability, which was 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. Affected is the function reboot/restore of the file /cgi-bin/lighttpd.cgi of the component Web Interface. The manipulation leads to improper authentication. It is possible to launch 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.

Es wurde eine Schwachstelle in LB-LINK BL-AC1900, BL-AC2100_AZ3, BL-AC3600, BL-AX1800, BL-AX5400P and BL-WR9000 bis 20250702 gefunden. Sie wurde als kritisch eingestuft. Es geht dabei um die Funktion reboot/restore der Datei /cgi-bin/lighttpd.cgi der Komponente Web Interface. Dank der Manipulation mit unbekannten Daten kann eine improper authentication-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk passieren. Der Exploit steht zur öffentlichen Verfügung.

*Credits: waiwai24

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

High

None

Integrity

High

None

Availability

High

None

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

High

None

Integrity

High

None

Availability

High

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Yes

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2025-07-13 CVE Reserved
2025-07-14 CVE Published
2025-07-14 CVE Updated
2025-07-14 First Exploit
2025-07-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-287: Improper Authentication

CAPEC

References (4)

URL	Tag	Source
https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Privilege_Control_Defect_in_Blink_Router_Web_Interface_Permits_Arbitrary_Sensitive_Operation_Execution.md	Related
https://vuldb.com/?id.316272	Technical Description
https://vuldb.com/?submit.608018	Third Party Advisory

URL	Date	SRC
https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Privilege_Control_Defect_in_Blink_Router_Web_Interface_Permits_Arbitrary_Sensitive_Operation_Execution.md#poc	2025-07-14

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Lb-link Search vendor "Lb-link"		Bl-ac1900 Search vendor "Lb-link" for product "Bl-ac1900"				*		-		Affected
Lb-link Search vendor "Lb-link"		Bl-wr9000 Search vendor "Lb-link" for product "Bl-wr9000"				*		-		Affected