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CVE-2015-5887

Status: ModifiedHigh (10)—

The TLS Handshake Protocol implementation in Secure Transport in Apple OS X before 10.11 accepts a Certificate Request message within a session in which no Server Key Exchange message has been sent, which allows remote attackers to have an unspecified impact via crafted TLS data.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Apple — MAC OS X

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2015-5887",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "product-security@apple.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-10-09T05:59:21.250",
  "references": [
    {
      "url": "http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "product-security@apple.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/76908",
      "source": "product-security@apple.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1033703",
      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/HT205267",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "product-security@apple.com"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/76908",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1033703",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.apple.com/HT205267",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-17"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The TLS Handshake Protocol implementation in Secure Transport in Apple OS X before 10.11 accepts a Certificate Request message within a session in which no Server Key Exchange message has been sent, which allows remote attackers to have an unspecified impact via crafted TLS data."
    },
    {
      "lang": "es",
      "value": "La implementación del Handshake Protocol de TLS en Secure Transport en Apple OS X en versiones anteriores a 10.11 acepta un mensaje Certificate Request en una sesión en la cual no ha sido enviado un mensaje Server Key Exchange, lo que permite a atacantes remotos tener un impacto no especificado a través de datos TLS manipulados."
    }
  ],
  "lastModified": "2026-06-17T00:29:57.230",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0C5FF5EF-B5D2-4BFE-8C0E-DF1F99F3989D",
              "versionEndIncluding": "10.10.5"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "product-security@apple.com"
}