KEV Entry

CVE-2026-21891

Known Exploited Vulnerability Entry Previdian

Back to Catalog View Vulnerability
Entry Details
Confirmed Exploited

CVE-2026-21891

2026-04-10 02:00 CEST

Timestamps

2026-04-10

2026-04-10

Scope

ZimaOS has Authentication Bypass via System-Level Username | Affected: IceWhale Tech / ZimaOS | CVSS: 9.4 (CRITICAL) | EPSS: 0.0235 | 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': 'previdian', 'url': 'https://previdian.com/CVE-2026-21891'}

e5de57ea-cedb-48a3-9aeb-1888804e5034

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": "2026-04-10T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cve_id": "CVE-2026-21891",
  "cvss_estimated": false,
  "cvss_score": 9.4,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.8307,
  "epss_score": 0.0235,
  "feed": "Previdian (previdian.com)",
  "ghsa_id": null,
  "not_yet_in_cisa_kev": true,
  "previous_ids": [],
  "product": "ZimaOS",
  "title": "ZimaOS has Authentication Bypass via System-Level Username",
  "used_in_malware": "unknown",
  "vendor": "IceWhale Tech",
  "virtual_patch": false,
  "vulnerability_id": "CVE-2026-21891"
}
 -
Export Options
JSON Object JSON API View Full Catalog