How severe is CVE-2025-57278?

CVE-2025-57278 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-57278 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-57278?

CVE-2025-57278 affects Lb-link Bl-cpe300m Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-57278?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-57278 have an EU (EUVD) identifier?

Yes. CVE-2025-57278 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30822.

When was CVE-2025-57278 published?

CVE-2025-57278 was published on 2025-09-09 and last updated on 2026-06-17.

CVE-2025-57278

CVE-2025-57278 is a high-severity vulnerability in Lb-link Bl-cpe300m Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-30822
Weakness: CWE-287
Affected product: Lb-link Bl-cpe300m Firmware
Published: 2025-09-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-57278?: 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.
How severe is CVE-2025-57278?: CVE-2025-57278 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-57278 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-57278?: CVE-2025-57278 affects Lb-link Bl-cpe300m Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-57278?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-57278 have an EU (EUVD) identifier?: Yes. CVE-2025-57278 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30822.
When was CVE-2025-57278 published?: CVE-2025-57278 was published on 2025-09-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:lb-link:bl-cpe300m_firmware:-:*:*:*:*:*:*:*

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