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CVE-2020-4576

Status: ModifiedHigh (7.5)—

IBM WebSphere Application Server 7.5, 8.0, 8.5, and 9.0 traditional could allow a remote attacker to obtain sensitive information with a specially-crafted sequence of serialized objects. IBM X-Force ID: 184428.

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)

IBM — Websphere Application Server

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-4576",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "vendor": "IBM",
          "product": "WebSphere Application Server",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "status": "affected",
              "version": "8.0"
            },
            {
              "status": "affected",
              "version": "8.5"
            },
            {
              "status": "affected",
              "version": "9.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-10-01T16:15:12.520",
  "references": [
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/184428",
      "tags": [
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/6339807",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/184428",
      "tags": [
        "VDB Entry",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.ibm.com/support/pages/node/6339807",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM WebSphere Application Server 7.5, 8.0, 8.5, and 9.0 traditional could allow a remote attacker to obtain sensitive information with a specially-crafted sequence of serialized objects. IBM X-Force ID: 184428."
    },
    {
      "lang": "es",
      "value": "IBM WebSphere Application Server versiones 7.5, 8.0, 8.5 y 9.0 tradicional podría permitir a un atacante remoto obtener información confidencial con una secuencia de objetos serializados especialmente diseñada. IBM X-Force ID: 184428"
    }
  ],
  "lastModified": "2026-06-17T03:20:11.430",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C6181AF3-5088-470D-A399-3EE9B5A1F124",
              "versionEndExcluding": "7.0.0.45",
              "versionStartIncluding": "7.0.0.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9D0A0374-A6AD-4FF2-B612-7D859937BDE6",
              "versionEndExcluding": "8.0.0.15",
              "versionStartIncluding": "8.0.0.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "488B815F-7879-4F61-87EA-59636E2B10F3",
              "versionEndExcluding": "8.5.5.19",
              "versionStartIncluding": "8.5.0.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CBB6C405-EBA6-41C1-9BBF-8F841D1A8773",
              "versionEndExcluding": "9.0.5.6",
              "versionStartIncluding": "9.0.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com"
}