CVE-2025-57685
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductBL-AC2100_AZ3
PublishedSep 22, 2025
First seenSep 22, 2025
Weakness typeCWE-77Command injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| LB-Link BL-AC2100_AZ3 | 1.0.4 | — |
| LB-Link BL-WR4000 | 2.5.0 | — |
| LB-Link BL-WR9000_AE4 | 2.4.9 | — |
| LB-Link BL-AC1900_AZ2 | 1.0.2 | — |
| LB-Link BL-X26_AC8 | 1.2.8 | — |
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