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7.8High

CVE-2026-20940Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability

Microsoft Windows 10 Version 1607; Microsoft Windows 10 Version 1809; Microsoft Windows 10 Version 21H2; Microsoft Windows 10 Version 22H2 Published: (10 months ago)

Description

Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

Weakness (CWE): CWE-822

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
microsoft windows 10 1607 10.0.14393.0 – < 10.0.14393.8783
microsoft windows 10 1809 10.0.17763.0 – < 10.0.17763.8276
microsoft windows 10 21H2 10.0.19044.0 – < 10.0.19044.6809
microsoft windows 10 22H2 10.0.19045.0 – < 10.0.19045.6809
Microsoft Windows 10 Version 1607 10.0.14393.0 – < 10.0.14393.8783
Microsoft Windows 10 Version 1809 10.0.17763.0 – < 10.0.17763.8276
Microsoft Windows 10 Version 21H2 10.0.19044.0 – < 10.0.19044.6809
Microsoft Windows 10 Version 22H2 10.0.19045.0 – < 10.0.19045.6809
microsoft windows 11 23H2 10.0.22631.0 – < 10.0.22631.6491
Microsoft Windows 11 version 23H2 10.0.22631.0 – < 10.0.22631.6491
microsoft windows server 2008 r2
microsoft windows server 2008 R2 6.1.7601.0 – < 6.1.7601.28117
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – < 6.1.7601.28117
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – < 6.1.7601.28117
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – < 6.0.6003.23717
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – < 6.0.6003.23717
microsoft windows server 2008 sp2 6.0.6003.0 – < 6.0.6003.23717
Microsoft Windows Server 2012 6.2.9200.0 – < 6.2.9200.25868
Microsoft Windows Server 2012 R2 6.3.9600.0 – < 6.3.9600.22968
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – < 6.3.9600.22968
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – < 6.2.9200.25868
Microsoft Windows Server 2016 10.0.14393.0 – < 10.0.14393.8783
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – < 10.0.14393.8783
Microsoft Windows Server 2019 10.0.17763.0 – < 10.0.17763.8276
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – < 10.0.17763.8276
Microsoft Windows Server 2022 10.0.20348.0 – < 10.0.20348.4648

References and patches

CPE matches (NVD) (20)
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* < 10.0.14393.8783
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* < 10.0.14393.8783
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* < 10.0.17763.8276
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* < 10.0.17763.8276
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* < 10.0.19044.6809
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* < 10.0.19044.6809
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* < 10.0.19044.6809
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* < 10.0.19045.6809
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* < 10.0.19045.6809
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* < 10.0.19045.6809
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* < 10.0.22631.6491
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* < 10.0.22631.6491
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
  • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* < 10.0.14393.8783
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* < 10.0.17763.8276
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.4648

Recent CVEs in the same product — Windows 10

7.8High
CVE-2026-119382

Windows TPM Elevation of Privilege Vulnerability

Microsoft Windows 10 Version 1607; Microsoft Windows 10 Version 1809; Microsoft Windows 10 Version 21H2; Microsoft Windows 10 Version 22H2

Heap-based buffer overflow in Windows TPM allows an authorized attacker to elevate privileges locally.