Oct 19, 2026 · 17:39 UTC SEARCH
UNRATED KNOWN EXPLOITED
Vulnerability intelligence

CVE-2021-26829

VendorOpenPLC
ProductScadaBR
Known exploitedYes
Added to CISA KEVNovember 28, 2025
KEV due dateDecember 19, 2025
Known ransomware useNot identified by CISA

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.

CISA KEV status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities Catalog. Known ransomware campaign use: Unknown.

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