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.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-30822 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 10 Oct 2025 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Lb-link
Lb-link bl-cpe300m
Lb-link bl-cpe300m Firmware
CPEs cpe:2.3:h:lb-link:bl-cpe300m:-:*:*:*:*:*:*:*
cpe:2.3:o:lb-link:bl-cpe300m_firmware:-:*:*:*:*:*:*:*
Vendors & Products Lb-link
Lb-link bl-cpe300m
Lb-link bl-cpe300m Firmware

Mon, 22 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 09 Sep 2025 18:30:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-09-22T15:36:12.206Z

Reserved: 2025-08-17T00:00:00.000Z

Link: CVE-2025-57278

cve-icon Vulnrichment

Updated: 2025-09-22T15:36:07.914Z

cve-icon NVD

Status : Analyzed

Published: 2025-09-09T19:15:57.607

Modified: 2025-10-10T17:56:10.140

Link: CVE-2025-57278

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.