CVE-2021-26829

unknown KEV

Published 2025-11-28 · Modified 2025-11-28

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

1.5

Description

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

CISA KEV

Vendor: OpenPLC
Product: ScadaBR
Due date: 2025-12-19

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

{Vendor advisory: cisa-kev — 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}

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

References

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

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.