Windows USB Video Driver: Heap-based buffer overflow enables privilege escalation

Summary

A heap-based buffer overflow in the Windows USB Video Driver allows an authorized local attacker with low privileges to elevate privileges. Exploitation requires physical access to the system, for example by an insider or a person with access to an unattended or stolen device. The CNA rates the impact on confidentiality, integrity and availability as high (CVSS 3.1: 6.6, Medium). No public exploit is known and no in-the-wild exploitation is reported.

Affected

• Windows 10 Version 1607 (before 10.0.14393.9688)
• Windows 10 Version 1809 (before 10.0.17763.9487)
• Windows 10 Version 21H2 (before 10.0.19044.7846), unverified
• Windows 10 Version 22H2 (before 10.0.19045.7846), unverified
• Windows 11 Version 23H2 (before 10.0.22631.7711)
• Windows 11 Version 24H2 (before 10.0.26100.9974 or 10.0.26100.33822), conflicting values, unverified
• Windows 11 Versions 25H2, 26H1 and 26H2 (see MSRC advisory)
• Windows Server 2016, including Server Core (before 10.0.14393.9688)
• Windows Server 2019, including Server Core (before 10.0.17763.9487)
• Windows Server 2022 (before 10.0.20348.5870)

Fixed in

Unknown. The MSRC advisory has not been verified. Third-party bulletins state that the fix is included in the November 2026 cumulative updates (for example KB5131085 for Server 2019, KB5131090 for Server 2022 and KB5131096 for Windows 10 21H2). These KB numbers are unverified.

Workaround

Unknown. No vendor workaround found. Restricting physical access to USB ports or applying device control policies can reduce the risk on systems that cannot be patched promptly.

Exploitation

• No public proof of concept or exploit found.
• Third-party bulletins report no confirmed in-the-wild exploitation and no CISA KEV listing (KEV not directly checked).
• CISA SSVC: exploitation none, automatable no, technical impact total.
• EPSS score unavailable.

Our recommendation

• Install the November 2026 cumulative update on all affected Windows 10, 11 and Server systems once the fixed build is confirmed on the MSRC advisory.
• Identify endpoints running older Windows 10 branches and check whether they are still supported; unsupported systems will not receive this fix.
• Restrict physical access to workstations and enforce USB device control on shared or public-facing PCs.
• Lock unattended devices and monitor for suspicious privilege escalation.
• Check the NVD and CISA KEV once the CVE has been analysed.

Public exploits iAttack code is publicly available (PoC on GitHub, Metasploit or Exploit-DB).

PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.

Research sources

• Microsoft Security Update Guide: CVE-2026-112984 msrc.microsoft.com
• CVE Record CVE-2026-112984 (CNA: Microsoft) www.cve.org
• Strix.ai: CVE-2026-112984 www.strix.ai
• Senserva KB5131085 (Server 2019, third-party) senserva.com
• Senserva KB5131090 (Server 2022, third-party) senserva.com
• Senserva KB5131096 (Windows 10 21H2, third-party) 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, 11:46.