KEV Entry

CVE-2021-26828

Known Exploited Vulnerability Entry Previdian

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Entry Details
Confirmed Exploited

CVE-2021-26828

2026-06-01 12:45 CEST

Timestamps

2026-06-01

2026-06-01

Scope

OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files... | Affected: OpenPLC / ScadaBR | CVSS: 8.8 (HIGH) | EPSS: 0.39356 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-26828', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-26828'}
  • {'id': 'previdian', 'url': 'https://previdian.com/CVE-2021-26828'}

7fdbf7c8-2de1-46be-9f67-e20989cfb652

Previdian
caeb2787-0d58-4236-9039-7c86c3e566f3

2026-10-02 09:09 CEST

2026-10-02 09:09 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report previdian successful_exploitation 0.70
View details 
{
  "added_date": "2026-06-01T10:45:29.301Z",
  "ahead_of_cisa_kev": {
    "count": 1,
    "unit": "day"
  },
  "cve_id": "CVE-2021-26828",
  "cvss_estimated": false,
  "cvss_score": 8.8,
  "cvss_severity": "HIGH",
  "epss_percentile": 0.98564,
  "epss_score": 0.39356,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": false,
  "previous_ids": [],
  "product": "ScadaBR",
  "title": "OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files...",
  "used_in_malware": "unknown",
  "vendor": "OpenPLC",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2021-26828"
}
 -
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