KEV Entry

CVE-2021-22681

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-22681

2026-06-01 11:38 UTC

Timestamps

2026-06-01

2026-06-01

Scope

KEVIntel entry: Rockwell Automation Studio 5000 Logix Designer Versions 21 and later, and RSLogix 5000 Versions 16 through 20 use a key to verify Logix controllers... | Affected: Rockwell Automation / Studio 5000 Logix Designer, RSLogix 5000 | CVSS: 9.8 (CRITICAL) | EPSS: 0.25455 | Used in malware: unknown | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-22681', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-22681'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2021-22681'}

86abe385-30fa-4e8f-9568-1c1dbebb1d2a

caeb2787-0d58-4236-9039-7c86c3e566f3

2026-06-19 12:45 UTC

2026-06-19 12:45 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel successful_exploitation 0.70
View details 
{
  "added_date": "2026-06-01T11:38:00.140Z",
  "ahead_of_cisa_kev": {
    "count": 1,
    "unit": "day"
  },
  "cvss_score": 9.8,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.97681,
  "epss_score": 0.25455,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": false,
  "product": "Studio 5000 Logix Designer, RSLogix 5000",
  "title": "Rockwell Automation Studio 5000 Logix Designer Versions 21 and later, and RSLogix 5000 Versions 16 through 20 use a key to verify Logix controllers...",
  "used_in_malware": "unknown",
  "vendor": "Rockwell Automation"
}
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