KEV Entry

CVE-2021-42278

Known Exploited Vulnerability Entry CISA

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Entry Details
Confirmed Exploited

CVE-2021-42278

2022-04-11 02:00 CEST

Timestamps

2022-04-11

2022-04-11

Scope

Microsoft Active Directory Domain Services Privilege Escalation Vulnerability | Affected: Microsoft / Active Directory | Description: Microsoft Active Directory Domain Services contains an unspecified vulnerability that allows for privilege escalation. | Required action: Apply updates per vendor instructions. | Due date: 2022-05-02 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-42278

References
  • {'id': 'CVE-2021-42278', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-42278'}

ebd331d1-4f34-4e9e-943b-30ec1982510f

CISA
405284c2-e461-4670-8979-7fd2c9755a60

2026-10-02 08:10 CEST

2026-10-02 08:10 CEST

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-20"
  ],
  "date_added": "2022-04-11",
  "due_date": "2022-05-02",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Known",
  "product": "Active Directory",
  "vendorProject": "Microsoft",
  "vulnerabilityName": "Microsoft Active Directory Domain Services Privilege Escalation Vulnerability"
}
 -
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