The Virtual DOS Machine (VDM) subsystem of Microsoft Windows NT 4.0, Windows 2000, Windows XP, and Windows Server 2003 allows local users to access kernel memory and gain privileges via a malicious program that modified some system structures in a way that is not properly validated by privileged operating system functions.

Stack-based buffer overflow in the Task Scheduler for Windows 2000 and XP, and Internet Explorer 6 on Windows NT 4.0, allows local or remote attackers to execute arbitrary code via a .job file containing long parameters, as demonstrated using Internet Explorer and accessing a .job file on an anonymous share.

The POSIX component of Microsoft Windows NT and Windows 2000 allows local users to execute arbitrary code via certain parameters, possibly by modifying message length values and causing a buffer overflow.

Heap-based buffer overflow in the HtmlHelp program (hh.exe) in HTML Help for Microsoft Windows 98, Me, NT 4.0, 2000, XP, and Server 2003 allows remote attackers to execute arbitrary commands via a .CHM file with a large length field, a different vulnerability than CVE-2003-1041.

Double free vulnerability in mshtml.dll for certain versions of Internet Explorer 6.x allows remote attackers to cause a denial of service (application crash) via a malformed GIF image.

Buffer overflow in the rendering for (1) Windows Metafile (WMF) or (2) Enhanced Metafile (EMF) image formats in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, and XP SP1 allows remote attackers to execute arbitrary code via a malformed WMF or EMF image.

Buffer overflow in the Windows logon process (winlogon) in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, and XP SP1, when a member of a domain, allows remote attackers to execute arbitrary code.

Stack-based buffer overflow in certain Active Directory service functions in LSASRV.DLL of the Local Security Authority Subsystem Service (LSASS) in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, XP SP1, Server 2003, NetMeeting, Windows 98, and Windows ME, allows remote attackers to execute arbitrary code via a packet that causes the DsRolerUpgradeDownlevelServer function to create long debug entries for the DCPROMO.LOG log file, as exploited by the Sasser worm.

The component for the Virtual DOS Machine (VDM) subsystem in Windows NT 4.0 and Windows 2000 does not properly validate system structures, which allows local users to access protected kernel memory and execute arbitrary code.

The NtSetLdtEntries function in the programming interface for the Local Descriptor Table (LDT) in Windows NT 4.0 and Windows 2000 allows local attackers to gain access to kernel memory and execute arbitrary code via an expand-down data segment descriptor descriptor that points to protected memory.