Microsoft Windows USB Driver: Elevation of privilege via use after free
Summary
A use-after-free flaw (CWE-416) in the Windows USB Driver allows a local attacker with low privileges to elevate privileges on the affected system. Exploitation is rated high complexity and requires an existing local account or access to the machine. The risk is mainly post-compromise escalation to SYSTEM, especially on shared PCs, terminal servers and file servers.
Affected
- Windows 10 Version 1607 (10.0.14393.0 before 10.0.14393.9688)
- Windows 10 Version 1809 (10.0.17763.0 before 10.0.17763.9487)
- Windows 10 Version 21H2 (10.0.19044.0 before 10.0.19044.7846)
- Windows 10 Version 22H2 (10.0.19045.0 before 10.0.19045.7846)
- Windows 11 Version 23H2 (10.0.22631.0 before 10.0.22631.7711)
- Windows 11 Version 24H2 (10.0.26100.0 before 10.0.26100.9974)
- Windows 11 Version 25H2 (10.0.26200.0 before 10.0.26200.9974)
- Windows 11 Version 26H1 (10.0.28000.0 before 10.0.28000.3501)
- Windows 11 Version 26H2 (10.0.26300.0 before 10.0.26300.9974)
- Windows Server 2016 and Server Core (10.0.14393.0 before 10.0.14393.9688)
- Windows Server 2019 and Server Core (10.0.17763.0 before 10.0.17763.9487)
- Windows Server 2022 (10.0.20348.0 before 10.0.20348.5870)
Fixed in
Install the Windows cumulative security update from November 2026 or later, as listed in the Microsoft Security Update Guide. Exact KB numbers are unverified.
Workaround
No workaround documented. The vendor fix is the remedy.
Exploitation
- No exploitation in the wild known.
- No public proof of concept found.
- CISA SSVC: exploitation none, automatable no, technical impact total.
- CVSS exploit maturity: unproven (E:U).
Our recommendation
- Patch affected Windows systems in the next regular cycle, prioritising servers and multi-user systems.
- Verify the installed build against the Microsoft Security Update Guide.
- Restrict local logon on shared machines and servers.
- Control USB device use with device installation policies where feasible.
- Re-check the Microsoft advisory for exploitation updates.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows USB Driver
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131291, KB5131085, KB5131096, KB5131090, KB5131087, KB5132061
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Update Guide: CVE-2026-112764 msrc.microsoft.com
- CVE Record: CVE-2026-112764 www.cve.org
- Strix: CVE-2026-112764 www.strix.ai
- Senserva: KB5131096 senserva.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 09:25.
Original description (NVD)
Use after free in Windows USB Driver allows an authorized attacker to elevate privileges locally.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
Affected? We can help.
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