The process scheduler in the Microsoft Windows XP kernel does not make use of the process statistics kept by the kernel, performs scheduling based on CPU billing gathered from periodic process sampling ticks, and gives preference to "interactive" processes that perform voluntary sleeps, which allows local users to cause a denial of service (CPU consumption), as described in "Secretly Monopolizing the CPU Without Superuser Privileges."

Sign extension vulnerability in the createBrushIndirect function in the GDI library (gdi32.dll) in Microsoft Windows XP, Server 2003, and possibly other versions, allows user-assisted attackers to cause a denial of service (application crash) via a crafted WMF file.

The Microsoft Wireless Zero Configuration system (WZCS) allows local users to access WEP keys and pair-wise Master Keys (PMK) of the WPA pre-shared key via certain calls to the WZCQueryInterface API function in wzcsapi.dll.

The Microsoft Wireless Zero Configuration system (WZCS) stores WEP keys and pair-wise Master Keys (PMK) of the WPA pre-shared key in plaintext in memory of the explorer process, which allows attackers with access to process memory to steal the keys and access the network.

Unknown vulnerability in the PKINIT Protocol for Microsoft Windows 2000, Windows XP, and Windows Server 2003 could allow a local user to obtain information and spoof a server via a man-in-the-middle (MITM) attack between a client and a domain controller when PKINIT smart card authentication is being used.

Microsoft Windows XP SP1 allows local users to cause a denial of service (system crash) via an empty datagram to a raw IP over IP socket (IP protocol 4), as originally demonstrated using code in Python 2.3.

Memory leak in Microsoft Windows XP and Windows Server 2003 allows local users to cause a denial of service (memory exhaustion) by repeatedly creating and deleting directories using a non-standard tool such as smbmount.

"Shatter" style vulnerability in the Window Management application programming interface (API) for Microsoft Windows 98, Windows NT 4.0, Windows 2000, Windows XP, and Windows Server 2003 allows local users to gain privileges by using certain API functions to change properties of privileged programs using the SetWindowLong and SetWIndowLongPtr API functions.

The DCOM RPC interface for Microsoft Windows NT 4.0, 2000, XP, and Server 2003 allows remote attackers to cause network communications via an "alter context" call that contains additional data, aka the "Object Identity Vulnerability."

The screensaver on Windows NT 4.0, 2000, XP, and 2002 does not verify if a domain account has already been locked when a valid password is provided, which makes it easier for users with physical access to conduct brute force password guessing.

Microsoft Windows XP allows local users to prevent the system from booting via a corrupt explorer.exe.manifest file.

Windows File Protection (WFP) in Windows 2000 and XP does not remove old security catalog .CAT files, which could allow local users to replace new files with vulnerable old files that have valid hash codes.

Win32k.sys (aka Graphics Device Interface (GDI)) in Windows 2000 and XP allows local users to cause a denial of service (system crash) by calling the ShowWindow function after receiving a WMNCCREATE message.

Windows XP with fast user switching and account lockout enabled allows local users to deny user account access by setting the fast user switch to the same user (self) multiple times, which causes other accounts to be locked out.