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CVE-2025-4076

LB-LINK BL-AC3600 Password lighttpd.cgi easy_uci_set_option_string_0 command injection

Published: Apr 29, 2025Updated: May 2, 2025 Sources: CVE List NVD BDUCWE-74
6.3MEDIUM
NVD MITRE
EPSS Score
1.9%
Top 22.4%
CISA KEV
Not in KEV
Exploits
3 Known
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-74CWE-77

Affected Products

Shenzhen Bilian Electronics Co., Ltd.
commercial·CN
LB-LINK BL-AC3600On-premNetwork Device
Networking Infrastructure / router-switch
LB-LINK
commercial
BL-AC3600Embedded
Networking Infrastructure / router-switch

Exploitability

3 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

https://nvd.nist.gov/vuln/detail/CVE-2025-4076
nvd.nist.gov
https://github.com/GrayLxton/BLink_poc
github.com
https://github.com/GrayLxton/BLink_poc/blob/main/poc.py
github.com
and 4 more references View all →

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