CVE-2021-26828
Unrestricted Upload of File with Dangerous Type in OpenPLC ScadaBR. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 3 December 2025.
- Product
- OpenPLC ScadaBR
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
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.
More from OpenPLC this year.
- CVE-2021-26829 Cross-site Scripting, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 3 November 2026.