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CVE-2021-26829: OpenPLC ScadaBR

EPSS48.0%No. 885 of 1739 in KEV
CVE year2021~4 yrs before listing
Same vendor in KEV2
Same product2
FieldValue
VendorOpenPLC
ProductScadaBR
NameOpenPLC ScadaBR Cross-site Scripting Vulnerability
Added to KEV2025-11-28
US federal due date2025-12-19
Ransomware useUnknown
CWECWE-79

CISA description

OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm.

Other entries for this product

CVEVendor / productAddedEPSSRansomware
CVE-2021-26828OpenPLC ScadaBR2025-12-0339.3%Unknown

NVD — CVE-2021-26829

Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page

A OpenPLC ScadaBR vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2025-11-28.