Windows USB Video Driver: Elevation of privilege via integer overflow
Summary
A flaw (CWE-190, integer overflow or wraparound) in the Windows USB Video Driver allows a local attacker with an existing low-privilege account or code running as a normal user to elevate privileges. Successful exploitation could give the attacker high impact on confidentiality, integrity and availability of the affected system (CVSS 7.8). Microsoft rates the issue Important and exploitation as less likely; no exploitation in the wild or public proof of concept is known.
Affected
- Windows 10 Version 1607 (below 10.0.14393.9612)
- Windows 10 Version 1809 (below 10.0.17763.9376)
- Windows 10 Version 21H2 (below 10.0.19044.7807)
- Windows 10 Version 22H2 (below 10.0.19045.7807)
- Windows 11 Version 23H2 (below 10.0.22631.7652)
- Windows 11 Version 24H2 (below 10.0.26100.9711)
- Windows 11 Version 25H2 (below 10.0.26200.9711)
- Windows 11 Version 26H1 (below 10.0.28000.3231)
- Windows 11 Version 26H2 (below 10.0.26300.9711)
- Windows Server 2016 incl. Server Core (below 10.0.14393.9612)
- Windows Server 2019 incl. Server Core (below 10.0.17763.9376)
- Windows Server 2022 (below 10.0.20348.5761)
Fixed in
- Install the October 2026 security update for your Windows version, which provides the fixed builds listed above (for example 10.0.14393.9612 for Windows 10 Version 1607).
- Verify the exact KB article on the MSRC page before rollout.
Workaround
Unknown. No vendor-confirmed workaround is known. A third-party source suggests disabling the driver or restricting its installation, but this is unverified and would break webcams and other USB video devices.
Exploitation
- No evidence of exploitation in the wild found.
- No public proof of concept found.
- Microsoft rates exploitation as less likely.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Check whether your Windows 10 Version 1607 systems are still eligible for security updates (for example Enterprise LTSB or ESU); if not, plan an upgrade.
- Install the October 2026 cumulative update on all affected systems and verify the build number.
- Prioritize shared PCs, terminal servers, kiosks and multi-user systems.
- Limit use of untrusted USB devices where feasible.
- Monitor the MSRC page for changes to the exploitation status.
Information from Microsoft (Patch Tuesday October 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows USB Video 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)
- KB5126651, KB5126655, KB5126657, KB5126646, KB5127648, KB5126653
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Update Guide: CVE-2026-85807 msrc.microsoft.com
- NVD mirror on Vulners: CVE-2026-85807 vulners.com
- VulDB: CVE-2026-85807 vuldb.com
- Microsoft advisory mirror on Vulners: MS:CVE-2026-85807 vulners.com
- CVE mirror (imfht): CVE-2026-85807 cve.imfht.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 2 Nov 2026, 02:08.
Original description (NVD)
Integer overflow or wraparound in Windows USB Video 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.
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