KEV Entry

CVE-2026-21891

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2026-21891

2026-04-10 00:00 UTC

Timestamps

2026-04-10

2026-04-10

Scope

KEVIntel entry: ZimaOS has Authentication Bypass via System-Level Username | Affected: IceWhaleTech / ZimaOS | CVSS: 9.4 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True

References
  • {'id': 'CVE-2026-21891', 'url': 'https://www.cve.org/CVERecord?id=CVE-2026-21891'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2026-21891'}

38a7056e-04d0-4150-90e5-fd9dad1e5e76

caeb2787-0d58-4236-9039-7c86c3e566f3

2026-06-19 12:42 UTC

2026-06-19 12:42 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel successful_exploitation 0.70
View details 
{
  "added_date": "2026-04-10T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cvss_score": 9.4,
  "cvss_severity": "CRITICAL",
  "epss_percentile": null,
  "epss_score": null,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": true,
  "product": "ZimaOS",
  "title": "ZimaOS has Authentication Bypass via System-Level Username",
  "used_in_malware": "unknown",
  "vendor": "IceWhaleTech"
}
 -
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