CVE-2024-21338

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Entry Details

CVE-2024-21338

Confirmed

Yes

2024-03-04 00:00 UTC

Timestamps

2024-03-04

2024-03-04

Scope

KEV entry: Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability | Affected: Microsoft / Windows | Description: Microsoft Windows Kernel contains an exposed IOCTL with insufficient access control vulnerability within the IOCTL (input and output control) dispatcher in appid.sys that allows a local attacker to achieve privilege escalation. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2024-03-25 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338; https://nvd.nist.gov/vuln/detail/CVE-2024-21338

References
  • {'id': 'CVE-2024-21338', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2024-21338'}

84dfe84e-780a-4938-bfb7-9662816cb473

405284c2-e461-4670-8979-7fd2c9755a60

2026-02-02 12:26 UTC

2026-02-06 07:17 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-822"
  ],
  "date_added": "2024-03-04",
  "due_date": "2024-03-25",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Known",
  "product": "Windows",
  "vendorProject": "Microsoft",
  "vulnerabilityName": "Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability"
}
 -
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