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CVE-2017-8740

Status: ModifiedHigh (7.5)—💥 Exploit

Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to execute arbitrary code in the context of the current user, due to the way that the Microsoft Edge scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8649, CVE-2017-8660, CVE-2017-8729, CVE-2017-8738, CVE-2017-8740, CVE-2017-8741, CVE-2017-8748, CVE-2017-8752, CVE-2017-8753, CVE-2017-8755, CVE-2017-8756, and CVE-2017-11764.

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).

💥 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.

Affected technologies (1)

Microsoft — Edge

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2017-8740",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 7.6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
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        "userInteractionRequired": true
      }
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    "cvssMetricV30": [
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        "type": "Primary",
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        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.6
      }
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  },
  "affected": [
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      "source": "secure@microsoft.com",
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          "vendor": "Microsoft Corporation",
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  "published": "2017-09-13T01:29:11.550",
  "references": [
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      "url": "http://www.securityfocus.com/bid/100763",
      "tags": [
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      "source": "secure@microsoft.com"
    },
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    },
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      "source": "secure@microsoft.com"
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      "tags": [
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    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8740",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to execute arbitrary code in the context of the current user, due to the way that the Microsoft Edge scripting engine handles objects in memory, aka \"Scripting Engine Memory Corruption Vulnerability\". This CVE ID is unique from CVE-2017-8649, CVE-2017-8660, CVE-2017-8729, CVE-2017-8738, CVE-2017-8740, CVE-2017-8741, CVE-2017-8748, CVE-2017-8752, CVE-2017-8753, CVE-2017-8755, CVE-2017-8756, and CVE-2017-11764."
    },
    {
      "lang": "es",
      "value": "Microsoft Edge en Microsoft Windows 10 1703 permite a un atacante ejecutar código arbitrario en el contexto del usuario actual por la manera en la que el motor de scripting de Microsoft Edge maneja los objetos en la memoria. Esto también se conoce como \"Scripting Engine Memory Corruption Vulnerability\". El ID de este CVE es distinto a CVE-2017-8649, CVE-2017-8660, CVE-2017-8729, CVE-2017-8738, CVE-2017-8740, CVE-2017-8741, CVE-2017-8748, CVE-2017-8752, CVE-2017-8753, CVE-2017-8755, CVE-2017-8756 y CVE-2017-11764."
    }
  ],
  "lastModified": "2026-06-17T01:26:52.590",
  "configurations": [
    {
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        {
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          ],
          "operator": "OR"
        },
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          ],
          "operator": "OR"
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      "operator": "AND"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}