CVE-2021-26829

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2021-26829

Confirmed

Yes

2025-11-28 00:00 UTC

Timestamps

2025-11-28

2025-11-28

Scope

KEV entry: OpenPLC ScadaBR Cross-site Scripting Vulnerability | Affected: OpenPLC / ScadaBR | 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. | Due date: 2025-12-19 | Known ransomware campaign use (KEV): Unknown | Notes (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

References
  • {'id': 'CVE-2021-26829', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-26829'}

9e7b905f-7cb9-44a7-8fb6-a1b8d263e862

405284c2-e461-4670-8979-7fd2c9755a60

2026-02-02 13:24 UTC

2026-02-06 07:53 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-79"
  ],
  "date_added": "2025-11-28",
  "due_date": "2025-12-19",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "ScadaBR",
  "vendorProject": "OpenPLC",
  "vulnerabilityName": "OpenPLC ScadaBR Cross-site Scripting Vulnerability"
}
 -
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