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[ CVE-2021-26828 · Published 11 Jun 2021 ]

OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type Vulnerability

Exploited · CISA KEV CVSS 8.8 EPSS 39%Fix available

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-12-03
  • EPSS: 39% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

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.

CISA: 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.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 24 Dec 2025): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

[ References ]References