« Back to list

CVE-2018-8635

Status: ModifiedHigh (8.8)—

An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted authentication request to an affected SharePoint server, aka "Microsoft SharePoint Server Elevation of Privilege Vulnerability." This affects Microsoft SharePoint Server, Microsoft SharePoint.

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 (2)

Microsoft — Sharepoint Enterprise ServerMicrosoft — Sharepoint Server

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2018-8635",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Microsoft SharePoint Server",
          "versions": [
            {
              "status": "affected",
              "version": "2010 Service Pack 2"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft SharePoint",
          "versions": [
            {
              "status": "affected",
              "version": "Enterprise Server 2013 Service Pack 1"
            },
            {
              "status": "affected",
              "version": "Enterprise Server 2016"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-12-12T00:29:01.623",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/106121",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8635",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/106121",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8635",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted authentication request to an affected SharePoint server, aka \"Microsoft SharePoint Server Elevation of Privilege Vulnerability.\" This affects Microsoft SharePoint Server, Microsoft SharePoint."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de elevación de privilegios de elevación de privilegios cuando Microsoft SharePoint Server no sanea correctamente una petición de autenticación especialmente manipulada enviada a un servidor SharePoint afectado. Esto también se conoce como \"Microsoft SharePoint Elevation of Privilege Vulnerability.\" Esto afecta a Microsoft SharePoint Server y Microsoft SharePoint."
    }
  ],
  "lastModified": "2026-06-17T02:05:13.947",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:sharepoint_enterprise_server:2013:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A5D3A185-BE57-403E-914E-FDECEC3A477C"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9C082CC4-6128-475D-BC19-B239E348FDB2"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:sharepoint_server:2010:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9A57C675-05A9-4BC2-AE95-7CA5CA6B1F73"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}