CVE-2026-55000: Windows USB Print Driver Elevation of Privilege Vulnerability

Overview

Severity

Medium (CVSS 6.4)

CVSS Vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Jul

Released

2026-07-14

Description

Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Affected Products (8)

Windows

• Windows Server 2025 (Server Core installation)
• Windows 11 Version 25H2 for ARM64-based Systems
• Windows 11 Version 25H2 for x64-based Systems
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems
• Windows Server 2025
• Windows 11 version 26H1 for x64-based Systems
• Windows 11 Version 26H1 for ARM64-based Systems

Security Updates (4)

• 5099536
• 5101650
• 5095051
• 5101649

Acknowledgments

<a href="https://x.com/zeifan">Nafiez</a> with <a href="https://zeifan.my/">NLab Security</a>, <a href="https://mylostchristmas.tistory.com/20">Seung Chan Kim</a>, <a href="https://twitter.com/guhe120">AIフィジカルインターフェイス二号機</a>, <a href="https://twitter.com/guhe120">AIフィジカルインターフェイス二号機</a>

Revision History

• 2026-07-14: Information published.