CVE-2026-33835

highpriority · track · 1EPSS 0.021 · 82 %ileDEEUJPNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.12% (82nd) EPSS

CVSS 7.8 · high

Is it mine?

148 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.8755:Security Update:https://support.microsoft.com/help/5087538
https://support.microsoft.com/help/5087538
FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.8755:Security Update:https://support.microsoft.com/help/5087538
https://support.microsoft.com/help/5087538
FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.7291:Security Update:https://support.microsoft.com/help/5087544
https://support.microsoft.com/help/5087544
FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.7291:Security Update:https://support.microsoft.com/help/5087544
https://support.microsoft.com/help/5087544
FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.7291:Security Update:https://support.microsoft.com/help/5087544
https://support.microsoft.com/help/5087544
FixedWindows 10 Version 22H2 for 32-bit Systemsmsrc_csaf
10.0.19045.7417:Security Update:https://support.microsoft.com/help/5094127
https://support.microsoft.com/help/5094127
FixedWindows 10 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.19045.7417:Security Update:https://support.microsoft.com/help/5094127
https://support.microsoft.com/help/5094127
FixedWindows 10 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.19045.7417:Security Update:https://support.microsoft.com/help/5094127
https://support.microsoft.com/help/5094127
FixedWindows 11 Version 23H2 for ARM64-based Systemsmsrc_csaf
10.0.22631.7079:Security Update:https://support.microsoft.com/help/5087420
https://support.microsoft.com/help/5087420
FixedWindows 11 Version 23H2 for x64-based Systemsmsrc_csaf
10.0.22631.7219:Security Update:https://support.microsoft.com/help/5093998
https://support.microsoft.com/help/5093998
FixedWindows 11 Version 24H2 for ARM64-based Systemsmsrc_csaf
10.0.26100.8390:Security Hotpatch Update:https://support.microsoft.com/help/5089466
https://support.microsoft.com/help/5089466
FixedWindows 11 Version 24H2 for x64-based Systemsmsrc_csaf
10.0.26100.8390:Security Hotpatch Update:https://support.microsoft.com/help/5089466
https://support.microsoft.com/help/5089466
FixedWindows 11 Version 25H2 for ARM64-based Systemsmsrc_csaf
10.0.26200.8390:Security Hotpatch Update:https://support.microsoft.com/help/5089466
https://support.microsoft.com/help/5089466
FixedWindows 11 Version 25H2 for x64-based Systemsmsrc_csaf
10.0.26200.8390:Security Hotpatch Update:https://support.microsoft.com/help/5089466
https://support.microsoft.com/help/5089466
FixedWindows 11 Version 26H1 for ARM64-based Systemsmsrc_csaf
10.0.28000.2113:Security Update:https://support.microsoft.com/help/5089548
https://support.microsoft.com/help/5089548
FixedWindows 11 version 26H1 for x64-based Systemsmsrc_csaf
10.0.28000.2113:Security Update:https://support.microsoft.com/help/5089548
https://support.microsoft.com/help/5089548
FixedWindows Server 2019msrc_csaf
10.0.17763.8755:Security Update:https://support.microsoft.com/help/5087538
https://support.microsoft.com/help/5087538
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.8755:Security Update:https://support.microsoft.com/help/5087538
https://support.microsoft.com/help/5087538
FixedWindows Server 2022msrc_csaf
10.0.20348.5074:Security Hotpatch Update:https://support.microsoft.com/help/5087424
https://support.microsoft.com/help/5087424
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.5074:Security Hotpatch Update:https://support.microsoft.com/help/5087424
https://support.microsoft.com/help/5087424
FixedWindows Server 2022, 23H2 Edition (Server Core installation)msrc_csaf
10.0.25398.2330:Security Update:https://support.microsoft.com/help/5087541
https://support.microsoft.com/help/5087541
FixedWindows Server 2025msrc_csaf
10.0.26100.32772:Security Hotpatch Update:https://support.microsoft.com/help/5087423
https://support.microsoft.com/help/5087423
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.32772:Security Hotpatch Update:https://support.microsoft.com/help/5087423
https://support.microsoft.com/help/5087423

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · NCSC-NL NL

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USCWE-416USCWE-416USCWE-416US

affected products (148)

Products and version ranges known to be affected.

Hitachi Virtual Storage Platform 5100all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5100
Hitachi Virtual Storage Platform 5100Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5100h
Hitachi Virtual Storage Platform 5200all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5200
Hitachi Virtual Storage Platform 5200Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5200h
Hitachi Virtual Storage Platform 5500all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5500
Hitachi Virtual Storage Platform 5500Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5500h
Hitachi Virtual Storage Platform 5600all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5600
Hitachi Virtual Storage Platform 5600Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5600h
Microsoft Windows 10 Version 1607all versionscert_bundDEcpe:/o:microsoft:windows_10:version_1607
Microsoft Windows 10 Version 1809all versionscert_bundDEcpe:/o:microsoft:windows_10:version_1809
Microsoft Windows 10 Version 21H2all versionscert_bundDEcpe:/o:microsoft:windows_10:version_21h2
Microsoft Windows 10 Version 22H2all versionscert_bundDEcpe:/o:microsoft:windows_10:version_22h2
Microsoft Windows 11 Version 23H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_23h2
Microsoft Windows 11 Version 24H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_24h2
Microsoft Windows 11 Version 25H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_25h2
Microsoft Windows 11 version 26H1all versionscert_bundDE
Microsoft Windows Admin Center in Azure Portalall versionscert_bundDEcpe:/a:microsoft:windows_admin_center:in_azure_portal
Microsoft Windows Server 2012all versionscert_bundDEcpe:/o:microsoft:windows_server_2012:-
Microsoft Windows Server 2012 R2all versionscert_bundDEcpe:/o:microsoft:windows_server_2012_r2:-
Microsoft Windows Server 2016all versionscert_bundDEcpe:/o:microsoft:windows_server_2016:-

showing 20 of 148

advisories (4)

Vendor and ecosystem advisories describing this.

NCSC-2026-0141Kwetsbaarheden verholpen in Microsoft WindowsNL2026-05-12csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Windows.
WID-SEC-W-2026-1489Microsoft Windows Produkte: Mehrere SchwachstellenDeutsch2026-05-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Produkten ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.
msrc_CVE-2026-33835Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability2026-05-12csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
JVNDB-2026-024104JVN iPedia advisory JVNDB-2026-0241042026-07-17vendor · jvndbJP

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl msrc_csaf jvndb NVD CVE.org MITRE

published 2026-05-12modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

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