Heap-based buffer overflow in Windows Server and Windows - CVE-2026-32223
Published: April 15, 2026 / Updated: April 30, 2026
Vulnerability identifier: #VU126163
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2026-32223
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vendor: Microsoft
Affected software:
Windows Server
Windows
Windows Server
Windows
Detailed vulnerability description
The vulnerability allows a local attacker to escalate privileges on the target system.
The vulnerability exists due to a boundary error in Windows USB Printing Stack (usbprint.sys). An attacker with physical access can trigger a heap-based buffer overflow and gain elevated privileges on the target system.
How to mitigate CVE-2026-32223
Install updates from vendor's website.