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CVE-2021-21014

Status: ModifiedCritical (9.1)—💥 PoC

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to a file upload restriction bypass. Successful exploitation could lead to arbitrary code execution by an authenticated attacker. Access to the admin console is required for successful exploitation.

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Magento — Magento

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2021-21014",
  "cveTags": [],
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "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"
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        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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        "source": "psirt@adobe.com",
        "cvssData": {
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          "version": "3.0",
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
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  "affected": [
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      "source": "psirt@adobe.com",
      "affectedData": [
        {
          "vendor": "Adobe",
          "product": "Magento Commerce",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "2.4.1"
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              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "2.4.0-p1"
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              "version": "unspecified",
              "versionType": "custom",
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              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "None"
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  "published": "2021-02-11T21:15:12.540",
  "references": [
    {
      "url": "https://helpx.adobe.com/security/products/magento/apsb21-08.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@adobe.com"
    },
    {
      "url": "https://helpx.adobe.com/security/products/magento/apsb21-08.html",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "psirt@adobe.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to a file upload restriction bypass. Successful exploitation could lead to arbitrary code execution by an authenticated attacker. Access to the admin console is required for successful exploitation."
    },
    {
      "lang": "es",
      "value": "Magento versiones 2.4.1 (y anteriores), versiones 2.4.0-p1 (y anteriores) y versiones 2.3.6 (y anteriores), son vulnerables a una omisión de restricción de la carga de archivos. Una explotación con éxito podría conllevar a una ejecución de código arbitraria por parte de un atacante autenticado. Es requerido un acceso a la consola de administración para una explotación con éxito"
    }
  ],
  "lastModified": "2026-06-17T03:34:39.863",
  "configurations": [
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}