CVE-2021-26829
CISA KEVPublished November 28, 2025 · Updated April 3, 2026
high
Official Description+
OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm.
Affected Products
| Vendor | Product |
|---|---|
| OpenPLC | ScadaBR |
Patch Status
Patch by 2025-12-19
Recommended Actions
- Check if your systems use any of the affected products listed above.
- Apply vendor patches immediately if available.
- This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
- Monitor vendor advisories for updates and additional mitigations.
- Review logs for indicators of compromise related to CVE-2021-26829.