CVE-2014-1303

Status: ModifiedHigh (10)—💥 Exploit

Heap-based buffer overflow in Apple Safari 7.0.2 allows remote attackers to execute arbitrary code and bypass a sandbox protection mechanism via unspecified vectors, as demonstrated by Liang Chen during a Pwn2Own competition at CanSecWest 2014.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Base score: 10

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 35%
Percentile among all scored CVEs: 98
Score date: 10/8/2026

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Published on Exploit-DB · WebKitGTK 2.1.2 (Ubuntu 14.04) - Heap based Buffer Overflow (8/19/2017)
Published on Exploit-DB · Sony Playstation 4 (PS4) < 2.50 - WebKit Code Execution (PoC) (4/21/2016)
Proof of concept on GitHub (unverified) · List of proofs of concept on GitHub

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Apple — Safari

CWEs

CWE-119

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2014-1303",
  "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": "2014-03-26T14:55:05.773",
  "references": [
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2014-04/0009.html",
      "source": "product-security@apple.com"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2014-04/0135.html",
      "source": "product-security@apple.com"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2014-04/0136.html",
      "source": "product-security@apple.com"
    },
    {
      "url": "http://twitter.com/thezdi/statuses/444157530139136000",
      "source": "product-security@apple.com"
    },
    {
      "url": "http://www.pwn2own.com/2014/03/pwn2own-results-thursday-day-two/",
      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/kb/HT6537",
      "source": "product-security@apple.com"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2014-04/0009.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2014-04/0135.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2014-04/0136.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://twitter.com/thezdi/statuses/444157530139136000",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.pwn2own.com/2014/03/pwn2own-results-thursday-day-two/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.apple.com/kb/HT6537",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Heap-based buffer overflow in Apple Safari 7.0.2 allows remote attackers to execute arbitrary code and bypass a sandbox protection mechanism via unspecified vectors, as demonstrated by Liang Chen during a Pwn2Own competition at CanSecWest 2014."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de buffer basado en memoria dinámica en Apple Safari 7.0.2 permite a atacantes remotos ejecutar código arbitrario y evadir un mecanismo de proyección sandbox a través de vectores no especificados, como fue demostrado por Liang Chen durante una competición Pwn2Own en CanSecWest 2014."
    }
  ],
  "lastModified": "2026-06-17T00:04:40.190",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apple:safari:7.0.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40B87D10-55B3-42E7-8FF6-93EDF003337D"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "product-security@apple.com"
}