Microsoft Windows NTFS Privilege Escalation Vulnerability

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Jun 8, 2021 · Catalog

   Detected

   Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application.

2. Nov 3, 2021 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Nov 17, 2021 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application.

Affected

• cpe microsoft/windows 10 1507version unspecified
• cpe microsoft/windows 10 1607version unspecified
• cpe microsoft/windows 10 1809version unspecified
• cpe microsoft/windows 10 1909version unspecified
• cpe microsoft/windows 10 2004version unspecified
• cpe microsoft/windows 10 20h2version unspecified
• cpe microsoft/windows 10 21h1version unspecified
• cpe microsoft/windows 7version unspecified
• vendor Microsoft Windowsversion unspecified

Sources

• CISA KEVConfirmed exploitationCVE-2021-31956

  Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application.

  cisa.gov
• CVE.orgVulnerability recordCVE-2021-31956

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2021-31956

  30-day exploitation probability 22.3%

  first.org
• NIST NVDVulnerability recordCVE-2021-31956

  Windows NTFS Elevation of Privilege Vulnerability

  nvd.nist.gov

References

• CISA note · nvd.nist.gov
• Patch · portal.msrc.microsoft.com
• US Government Resource · cisa.gov