CVE-2025-57278
LB-Link BL-CPE300M AX300 4G LTE Router Authentication Bypass
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.
INFO
Published Date :
Sept. 9, 2025, 7:15 p.m.
Last Modified :
Oct. 10, 2025, 5:56 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-57278
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Implement secure session management mechanisms.
- Validate client identity on each request.
- Require re-authentication for new devices.
- Update firmware to the latest secure version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-57278.
| URL | Resource |
|---|---|
| https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html | Product |
| https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-cpe300m | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-57278 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-57278
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-57278 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-57278 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 10, 2025
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:o:lb-link:bl-cpe300m_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:lb-link:bl-cpe300m:-:*:*:*:*:*:*:* Added Reference Type MITRE: https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html Types: Product Added Reference Type MITRE: https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-cpe300m Types: Exploit, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 22, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-287 -
New CVE Received by [email protected]
Sep. 09, 2025
Action Type Old Value New Value 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. Added Reference https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html Added Reference https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-cpe300m