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CVE-2020-15077

Estado: ModificadaMedia (5.3)—

OpenVPN Access Server 2.8.7 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Openvpn — Openvpn Access Server

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-15077",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "security@openvpn.net",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "OpenVPN Access Server",
          "versions": [
            {
              "status": "affected",
              "version": "2.8.7 and earlier versions"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-04T11:15:07.697",
  "references": [
    {
      "url": "https://openvpn.net/security-advisory/access-server-security-update-cve-2020-15077/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@openvpn.net"
    },
    {
      "url": "https://openvpn.net/vpn-server-resources/release-notes/",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "security@openvpn.net"
    },
    {
      "url": "https://openvpn.net/security-advisory/access-server-security-update-cve-2020-15077/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://openvpn.net/vpn-server-resources/release-notes/",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@openvpn.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-305"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenVPN Access Server 2.8.7 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks."
    },
    {
      "lang": "es",
      "value": "OpenVPN Access Server versiones 2.8.7 y anteriores, permiten a atacantes remotos omitir la autenticación y los datos del canal de control de acceso en servidores configurados con autenticación diferida, que puede ser usado para desencadenar potencialmente nuevos filtrados de información"
    }
  ],
  "lastModified": "2026-06-17T02:56:00.767",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FFB7CAB1-ECA3-4F8F-9DFD-048BD7ABE8E0",
              "versionEndIncluding": "2.8.7"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@openvpn.net"
}