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FKIE_CVE-2020-16877

Vulnerability from fkie_nvd - Published: 2020-10-16 23:15 - Updated: 2026-06-17 02:58
Severity
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Summary
<p>An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.</p> <p>To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.</p> <p>The security update addresses the vulnerability by correcting how Windows handles reparse points.</p>
References
secure@microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877Patch, Vendor Advisory
Impacted products
Vendor Product Version
microsoft windows_10 1903
microsoft windows_10 1909
microsoft windows_10 2004
microsoft windows_server_2016 1903
microsoft windows_server_2016 1909
microsoft windows_server_2016 2004
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
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            "cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:*",
            "cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x64:*",
            "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*"
          ],
          "platforms": [
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            "x64-based Systems",
            "ARM64-based Systems"
          ],
          "product": "Windows 10 Version 1909",
          "vendor": "Microsoft",
          "versions": [
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          ],
          "platforms": [
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          "product": "Windows Server, version 1909 (Server Core installation)",
          "vendor": "Microsoft",
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          "platforms": [
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          ],
          "product": "Windows 10 Version 2004",
          "vendor": "Microsoft",
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              "version": "10.0.0",
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        {
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          "product": "Windows Server version 2004",
          "vendor": "Microsoft",
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            {
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              "status": "affected",
              "version": "10.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*",
              "matchCriteriaId": "3FB5CDAE-C713-4D9D-9D6A-2C2E8924A4BB",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "E9273B95-20ED-4547-B0A8-95AD15B30372",
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "\u003cp\u003eAn elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and overwrite or delete files.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows handles reparse points.\u003c/p\u003e"
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de escalada de privilegios cuando Microsoft Windows maneja inapropiadamente los puntos de an\u00e1lisis, tambi\u00e9n se conoce como \"Windows Elevation of Privilege Vulnerability\""
    }
  ],
  "id": "CVE-2020-16877",
  "lastModified": "2026-06-17T02:58:10.910",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 3.6,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:P",
          "version": "2.0"
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        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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    ],
    "cvssMetricV31": [
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          "attackVector": "LOCAL",
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          "baseScore": 7.1,
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          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
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          "integrityImpact": "HIGH",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
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    "ssvcV203": [
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        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-01-10T16:46:45.630550Z",
          "version": "2.0.3"
        }
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  },
  "published": "2020-10-16T23:15:12.697",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
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        "Vendor Advisory"
      ],
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877"
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    {
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      "tags": [
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        "Vendor Advisory"
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      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16877"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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