CVE-2021-26829
OpenPLC ScadaBR Cross-site Scripting Vulnerability
CVSS
—
No CVSS
EPSS
48.0%
p99
KEV
YES
Nov 28, 2025
Exploit Today
80
0-100
Published: — · Last modified: —
Product
OpenPLC / ScadaBR
Vulnerability
OpenPLC ScadaBR Cross-site Scripting Vulnerability
Added to KEV
Nov 28, 2025
Remediate by
Dec 19, 2025
Known ransomware use
No
Summary description
OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.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.
Notes
This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/SCADA-LTS/Scada-LTS/pull/3211 ; https://nvd.nist.gov/vuln/detail/CVE-2021-26829