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CVE-2015-1638

Status: ModifiedMedium (5.8)—

Microsoft Active Directory Federation Services (AD FS) 3.0 on Windows Server 2012 R2 does not properly handle logoff actions, which allows remote attackers to bypass intended access restrictions by leveraging an unattended workstation, aka "Active Directory Federation Services Information Disclosure Vulnerability."

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)

Microsoft — Windows Server 2012

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2015-1638",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-04-14T20:59:02.310",
  "references": [
    {
      "url": "http://www.securitytracker.com/id/1032115",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-040",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1032115",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-040",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Active Directory Federation Services (AD FS) 3.0 on Windows Server 2012 R2 does not properly handle logoff actions, which allows remote attackers to bypass intended access restrictions by leveraging an unattended workstation, aka \"Active Directory Federation Services Information Disclosure Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Microsoft Active Directory Federation Services (AD FS) 3.0 en Windows Server 2012 R2 no maneja correctamente las acciones de cierre de sesión, lo que permite a atacantes remotos evadir las restricciones de acceso mediante el aprovechamiento de una estación de trabajo desatendida, también conocido como 'vulnerabilidad de la divulgación de información de Active Directory Federation Services.'"
    }
  ],
  "lastModified": "2026-06-17T00:22:44.770",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:datacenter:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "32BCD530-F6E2-4F9B-AD4C-7DF2BED00296"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:essentials:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A1318333-EF3A-4DBA-8DD7-367BF843F70D"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:standard:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "74B5E7C1-6C1D-4605-91CF-AF105EFA678D"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}