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

5.3 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-4076

Check My Exposure

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Gray (VulDB User)

References

More from LB-LINK

View All →

CVE-2025-9580

LB-LINK BL-X26 HTTP set_blacklist os command injection

Medium 5.3

CVE-2025-9579

LB-LINK BL-X26 HTTP set_hidessid_cfg os command injection

Medium 5.3

CVE-2025-7574

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

Critical 9.3

CVE-2025-7573

LB-LINK BL-WR9000 lighttpd.cgi bs_GetManPwd information disclosure

Medium 6.9

CVE-2025-7572

LB-LINK BL-WR9000 lighttpd.cgi bs_GetHostInfo information disclosure

Medium 6.9

Affected Vendor

LB-LINK

View all reports →

Affected Software

BL-AC3600

Vulnerable Versions:

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