CVE-2025-57278

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:lb-link:bl-cpe300m_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "FEB6D1F9-5F2B-4CEC-8120-A3A02EC3FBD0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:lb-link:bl-cpe300m:-:*:*:*:*:*:*:*", "matchCriteriaId": "AAD074E3-D147-4A65-A0E7-DB97DCB1C957", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "El firmware del router LB-Link BL-CPE300M AX300 4G LTE, versi\u00f3n BL-R8800_B10_ALK_SL_V01.01.02P42U14_06, no implementa un manejo adecuado de la sesi\u00f3n. Despu\u00e9s de que un usuario se autentica desde una direcci\u00f3n IP espec\u00edfica, el router concede acceso a cualquier otro cliente que utilice la misma direcci\u00f3n IP, sin requerir credenciales ni verificar la identidad del cliente. No hay tokens de sesi\u00f3n, cookies o identificadores \u00fanicos implementados. Esta falla permite a un atacante obtener acceso administrativo completo simplemente configurando su dispositivo para usar la misma direcci\u00f3n IP que un usuario previamente autenticado. Esto resulta en una omisi\u00f3n de autenticaci\u00f3n completa."}], "id": "CVE-2025-57278", "lastModified": "2026-11-07T18:10:00.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-57278", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-09-10T14:11:49.968473Z", "version": "2.0.3"}}]}, "published": "2025-09-09T19:15:57.607", "references": [{"source": "cve@mitre.org", "tags": ["Product"], "url": "https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-cpe300m"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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