CVE-2025-57685
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk65th percentile - higher than 65% of all known CVEs
Summary
LB-Link routers, including models BL-AC2100_AZ3 V1.0.4, BL-WR4000 v2.5.0, BL-WR9000_AE4 v2.4.9, BL-AC1900_AZ2 v1.0.2, BL-X26_AC8 v1.2.8, and BL-LTE300_DA4 V1.2.3, are vulnerable to unauthorized command injection. Attackers can exploit the /goform/set_serial_cfg interface to gain the highest device privileges without authorization and remotely execute malicious commands.
Risk Assessment
The risk involves potential full device takeover by an unauthorized attacker, leading to network compromise, traffic interception, or use of the device in DDoS attacks.
Recommendation
It is recommended to immediately block access to the /goform/set_serial_cfg interface from untrusted networks and contact the vendor for a firmware update that addresses the vulnerability.
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Original NVD description (English source)
The LB-Link routers, including the BL-AC2100_AZ3 V1.0.4, BL-WR4000 v2.5.0, BL-WR9000_AE4 v2.4.9, BL-AC1900_AZ2 v1.0.2, BL-X26_AC8 v1.2.8, and BL-LTE300_DA4 V1.2.3 models, are vulnerable to unauthorized command injection. Attackers can exploit this vulnerability by accessing the /goform/set_serial_cfg interface to gain the highest level of device privileges without authorization, enabling them to remotely execute malicious commands.

