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CVE-2021-21084

Estado: ModificadaMedia (6.1)—

AEM's Cloud Service offering, as well as versions 6.5.7.0 (and below), 6.4.8.3 (and below) and 6.3.3.8 (and below) are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Adobe — Experience ManagerAdobe — Experience Manager Cloud Service

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-21084",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@adobe.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@adobe.com",
      "affectedData": [
        {
          "vendor": "Adobe",
          "product": "Experience Manager",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "6.3.3.8"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "6.4.8.3"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "6.5.7.0"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "AEM Cloud Service"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-28T14:15:09.043",
  "references": [
    {
      "url": "https://helpx.adobe.com/security/products/experience-manager/apsb21-15.html",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "psirt@adobe.com"
    },
    {
      "url": "https://helpx.adobe.com/security/products/experience-manager/apsb21-15.html",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@adobe.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "AEM's Cloud Service offering, as well as versions 6.5.7.0 (and below), 6.4.8.3 (and below) and 6.3.3.8 (and below) are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field."
    },
    {
      "lang": "es",
      "value": "AEM oferta de Servicios en la Nube, así como las versiones 6.5.7.0 (y posteriores), versiones 6.4.8.3 (y posteriores) y versiones 6.3.3.8 (y posteriores), están afectadas por una vulnerabilidad de tipo Cross-Site Scripting (XSS) almacenado que podría ser abusada por un atacante para inyectar scripts maliciosos en campos de formularios vulnerables. El JavaScript malicioso podría ser ejecutado en el navegador de la víctima cuando ésta navega a la página que contiene el campo vulnerable"
    }
  ],
  "lastModified": "2026-06-17T03:34:47.933",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:adobe:experience_manager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "47328F6D-4225-4021-B5A4-F111A07E6B92",
              "versionEndIncluding": "6.3.3.8"
            },
            {
              "criteria": "cpe:2.3:a:adobe:experience_manager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F36EEFB5-68FB-45F7-A4EF-ACA58D400B64",
              "versionEndExcluding": "6.4.8.4",
              "versionStartIncluding": "6.4.0.0"
            },
            {
              "criteria": "cpe:2.3:a:adobe:experience_manager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "50AC31ED-B042-4628-83B7-4CA4703873B5",
              "versionEndExcluding": "6.5.8.0",
              "versionStartIncluding": "6.5.0.0"
            },
            {
              "criteria": "cpe:2.3:a:adobe:experience_manager_cloud_service:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "360F2694-4E6F-4D0C-9218-CD0450506AB6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@adobe.com"
}