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Findings

CVE-2021-26828

OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type Vulnerability

Published Jun 11, 2021 · updated Jun 16, 2026 · OpenPLC ScadaBR

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.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 11, 2021 · Catalog

    Detected

    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.

  2. Dec 3, 2025 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Dec 24, 2025 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Required 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.

CISA due date Dec 24, 2025

Affected

  • cpe scadabr/scadabrversion unspecified
  • vendor OpenPLC ScadaBRversion unspecified

Sources

  • CISA KEVCVE-2021-26828

    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.

    cisa.gov
  • CVE.orgCVE-2021-26828

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2021-26828

    30-day exploitation probability 39.4%

    first.org
  • NIST NVDCVE-2021-26828

    OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm.

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/162564/ScadaBR-1.0-1.1CE-Linux-Shell-Upload.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References