CVE-2026-49804

Windows USB Video Driver Elevation of Privilege Vulnerability

Published Jul 14, 2026 CVSS 3.1 · 6.6 Medium EPSS < 1% KEV · Not listed
Description
Heap-based buffer overflow in Windows USB Video Driver allows an unauthorized attacker to elevate privileges with a physical attack.

Analysis

AI-generated

Technical impact

The vulnerability is a heap‑based buffer overflow (CWE-122) that occurs within the Windows USB Video Driver. When a malicious USB video device is connected, the driver incorrectly handles data, writing beyond the bounds of a heap buffer and allowing an unauthorized attacker to elevate privileges on the affected system.

Affected Systems

Affected by Microsoft are Windows 10 versions 1607, 1809, 21H2, and 22H2; Windows 11 versions 24H2 and 25H2; and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025, including all Server Core installations. The vulnerability impacts 32‑bit, 64‑bit and ARM64 variants as identified in the CPE data.

Risk and Exploitability

The CVSS score of 6.6 indicates a moderate impact, and the EPSS score of less than 1 % signifies a very low estimated exploitation probability. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires a physical attacker to connect a malicious USB video device; it is not a remote network threat.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Microsoft security update for CVE‑2026‑49804 as soon as it is released.
  • Disable or uninstall the Windows USB Video Driver if it is not required for system operation.
  • Implement device control policies or use USB port blockers to restrict or prevent USB video devices from being connected.

Generated by OpenCVE AI on July 31, 2026 at 08:51 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Microsoft windows Server 2012 (server Core Installation)
Microsoft windows Server 2012 R2
Microsoft windows Server 2012 R2 (server Core Installation)
Microsoft windows Server 2016 (server Core Installation)
Microsoft windows Server 2019 (server Core Installation)
Microsoft windows Server 2025 (server Core Installation)
Vendors & Products Microsoft windows Server 2012 (server Core Installation)
Microsoft windows Server 2012 R2
Microsoft windows Server 2012 R2 (server Core Installation)
Microsoft windows Server 2016 (server Core Installation)
Microsoft windows Server 2019 (server Core Installation)
Microsoft windows Server 2025 (server Core Installation)
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Heap-based buffer overflow in Windows USB Video Driver allows an unauthorized attacker to elevate privileges with a physical attack.
Title Windows USB Video Driver Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows Server 2012
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-122
CPEs cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows Server 2012
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}