CVE-2025-57278

{
  "id": "CVE-2025-57278",
  "sourceIdentifier": "[email protected]",
  "published": "2025-09-09T19:15:57.607",
  "lastModified": "2026-11-07T18:10:00.200",
  "vulnStatus": "Analyzed",
  "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, versión BL-R8800_B10_ALK_SL_V01.01.02P42U14_06, no implementa un manejo adecuado de la sesión. Después de que un usuario se autentica desde una dirección IP específica, el router concede acceso a cualquier otro cliente que utilice la misma dirección IP, sin requerir credenciales ni verificar la identidad del cliente. No hay tokens de sesión, cookies o identificadores únicos implementados. Esta falla permite a un atacante obtener acceso administrativo completo simplemente configurando su dispositivo para usar la misma dirección IP que un usuario previamente autenticado. Esto resulta en una omisión de autenticación completa."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "version": "n/a",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2025-09-10T14:11:49.968473Z",
          "id": "CVE-2025-57278",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
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  "references": [
    {
      "url": "https://www.lb-link.com/CPE300M-AX300-4G-LTE-Router-pd502775568.html",
      "source": "[email protected]",
      "tags": [
        "Product"
      ]
    },
    {
      "url": "https://www.zyenra.com/blog/improper-ip-bound-session-authentication-in-lb-link-cpe300m",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}