Vulnerability Description
The LB-Link BL-CPE300M AX300 4G LTE Router firmware version BL-R8800_B10_ALK_SL_V01.01.02P42U14_06 does not implement proper session handling. After a user authenticates from a specific IP address, the router grants access to any other client using that same IP, without requiring credentials or verifying client identity. There are no session tokens, cookies, or unique identifiers in place. This flaw allows an attacker to obtain full administrative access simply by configuring their device to use the same IP address as a previously authenticated user. This results in a complete authentication bypass.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lb-Link | Bl-Cpe300M Firmware | - |
| Lb-Link | Bl-Cpe300M | - |
Related Weaknesses (CWE)
References
- https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.htmlProduct
- https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-ExploitThird Party Advisory
FAQ
What is CVE-2025-57278?
CVE-2025-57278 is a vulnerability with a CVSS score of 8.8 (HIGH). The LB-Link BL-CPE300M AX300 4G LTE Router firmware version BL-R8800_B10_ALK_SL_V01.01.02P42U14_06 does not implement proper session handling. After a user authenticates from a specific IP address, th...
How severe is CVE-2025-57278?
CVE-2025-57278 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-57278?
Check the references section above for vendor advisories and patch information. Affected products include: Lb-Link Bl-Cpe300M Firmware, Lb-Link Bl-Cpe300M.