CVE-2021-33784
published 2021-07-14CVE-2021-33784: Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
PriorityP340high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.65%
48.5th percentile
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Affected
34 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.2061 | 10.0.17763.2061 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.2061 | 10.0.17763.2061 |
| microsoft | windows_10_version_1909 | >= 10.0.0 < 10.0.18363.1679 | 10.0.18363.1679 |
| microsoft | windows_10_version_2004 | >= 10.0.0 < 10.0.19041.1110 | 10.0.19041.1110 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19042.1110 | 10.0.19042.1110 |
| microsoft | windows_10_version_21h1 | >= 10.0.0 < 10.0.19043.1110 | 10.0.19043.1110 |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.2061 | 10.0.17763.2061 |
| microsoft | windows_server_version_2004 | >= 10.0.0 < 10.0.19041.1110 | 10.0.19041.1110 |
| microsoft | windows_server_version_20h2 | >= 10.0.0 < 10.0.19042.1110 | 10.0.19042.1110 |
| msrc | windows_10_version_1809_for_32-bit_systems | — | — |
| msrc | windows_10_version_1809_for_arm64-based_systems | — | — |
| msrc | windows_10_version_1809_for_x64-based_systems | — | — |
| msrc | windows_10_version_1909_for_32-bit_systems | — | — |
| msrc | windows_10_version_1909_for_arm64-based_systems | — | — |
| msrc | windows_10_version_1909_for_x64-based_systems | — | — |
| msrc | windows_10_version_2004_for_32-bit_systems | — | — |
| msrc | windows_10_version_2004_for_arm64-based_systems | — | — |
| msrc | windows_10_version_2004_for_x64-based_systems | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
vendor_msrc7.8HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Microsoft Windows up to Server 2019 Cloud Files Mini Filter Driver privilege escalation
vuldb·2026-08-11·CVSS 7.8
CVE-2021-33784 [HIGH] Microsoft Windows up to Server 2019 Cloud Files Mini Filter Driver privilege escalation
A vulnerability, which was classified as critical, has been found in Microsoft Windows up to Server 2019. This affects an unknown part of the component Cloud Files Mini Filter Driver. This manipulation causes privilege escalation.
This vulnerability appears as CVE-2021-33784. The attack may be initiated remotely. There is no available exploit.
It is recommended to apply a patch to fix this issue.
GHSA
GHSA-296j-266h-6jc4: Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
ghsa_unreviewed·2022-05-24
CVE-2021-33784 [HIGH] CWE-269 GHSA-296j-266h-6jc4: Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Microsoft
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
vendor_msrc·2021-07-13·CVSS 7.8
CVE-2021-33784 [HIGH] Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Windows Cloud Files Mini Filter Driver: Windows Cloud Files Mini Filter Driver
Microsoft: Microsoft
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5004244
Reference: https://support.microsoft.com/help/5004244
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5004245
Reference: https://support.microsoft.com/help/5004245
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5004237
Reference: https://support.microsoft.com/help/5004237
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-07-14
Published