ACTIVELY EXPLOITED
CVE-2021-26828: OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type Vulnerability
| Vendor | OpenPLC |
|---|---|
| Product | ScadaBR |
| Actively exploited | Yes |
| Added to CISA KEV | 3 Dec 2025 |
| CISA federal deadline | 24 Dec 2025 |
| Weakness (CWE) | CWE-434 |
Required action (CISA's text)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description (NVD)
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.
SOURCES
Other OpenPLC flaws
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.