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CVE-2025-57278

HIGH
Published 2025-09-09T00:00:00.000Z
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Expert Analysis

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CVSS Score

V3.1
8.8
/10
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

Attack Vector Metrics

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

EU Coordinated

Exploitation Status

No Known Exploitation

EUVD ID

View on ENISA

ENISA Analysis

Malicious code in bioql (PyPI)

Affected Products (ENISA)

n/a
n/a

ENISA Scoring

CVSS Score (3.1)

8.8
/10
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score

0.050
probability

ENISA References

https://nvd.nist.gov/vuln/detail/CVE-2025-57278
https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html
https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-cpe300m

Data provided by ENISA EU Vulnerability Database. Last updated: October 3, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-c68g-xh4v-hj6j

Advisory Details

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 Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-57278
WEB https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html
WEB https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-cpe300m

Advisory provided by GitHub Security Advisory Database. Published: September 9, 2025, Modified: September 22, 2025

References

https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html
https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-cpe300m
Published: 2025-09-09T00:00:00.000Z
Last Modified: 2025-09-22T15:36:12.206Z
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