{
  "id": "cve-2021-26828",
  "cveID": "CVE-2021-26828",
  "vendor": "OpenPLC",
  "product": "ScadaBR",
  "vulnerabilityName": "OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type Vulnerability",
  "shortDescription": "OpenPLC ScadaBR contains an unrestricted upload of file with dangerous type vulnerability that allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm.",
  "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "dateAdded": "2025-12-03",
  "dueDate": "2025-12-24",
  "knownRansomware": false,
  "cwes": [
    "CWE-434"
  ],
  "notes": "This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/SCADA-LTS/Scada-LTS/pull/2174 ; https://nvd.nist.gov/vuln/detail/CVE-2021-26828",
  "sources": [
    {
      "label": "NVD",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26828"
    },
    {
      "label": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "label": "github.com",
      "url": "https://github.com/SCADA-LTS/Scada-LTS/pull/2174"
    },
    {
      "label": "nvd.nist.gov",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26828"
    }
  ],
  "cvss": {
    "score": 8.8,
    "severity": "HIGH",
    "version": "3.1",
    "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  },
  "epss": {
    "score": 0.39356,
    "percentile": 0.98515
  },
  "timeline": [
    {
      "date": "2025-12-03",
      "event": "Added to the CISA KEV catalog"
    },
    {
      "date": "2025-12-24",
      "event": "CISA remediation due date (BOD 22-01)"
    }
  ],
  "status": "past due"
}