{
  "id": "CVE-2026-34621",
  "url": "https://spydr.io/cve/CVE-2026-34621",
  "published": "2026-04-11T07:16:03.633Z",
  "modified": "2026-08-28T00:17:16.097Z",
  "score": 8.6,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
  "score_source": "adobe.com",
  "epss": 0.02183,
  "epss_percentile": 0.81752,
  "exploited": true,
  "kev": {
    "added": "2026-04-13",
    "due": "2026-04-27",
    "action": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
    "ransomware": "Unknown",
    "name": "Adobe Acrobat and Reader Prototype Pollution Vulnerability",
    "notes": "https://helpx.adobe.com/security/products/acrobat/apsb26-43.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-34621"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Adobe"
  ],
  "products": [
    "Adobe Acrobat DC",
    "Adobe Acrobat Reader DC",
    "Adobe Acrobat 2024"
  ],
  "cwes": [
    "CWE-1321"
  ],
  "description": "Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 8.6,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://helpx.adobe.com/security/products/acrobat/apsb26-43.html",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34621",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34621",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}