CVE-2021-26828
CVSS v3
8.8
HIGH
EPSS Score
80.0 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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 Known Exploited Vulnerability
- Date Added
- 2025-12-03
- Patch Due Date
- 2025-12-24
- Ransomware Use
- Unknown
Technical details
- Published
- 2021-06-11
Frequently asked questions
What is CVE-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.
Is CVE-2021-26828 actively exploited?
Yes. CVE-2021-26828 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-12-24.
What is the CVSS score for CVE-2021-26828?
CVE-2021-26828 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-26828 affecting your environment?
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