Windows 2000, XP, and Server 2003 does not properly "validate the use of memory regions" for COM structured storage files, which allows attackers to execute arbitrary code, aka the "COM Structured Storage Vulnerability."
From 神龙GPT (AIGC)
Windows 2000、 XP 和 Server 2003 没有正确地验证 COM 结构化存储文件的内存区域的使用，这允许攻击者执行任意代码，也被称为“COM 结构化存储漏洞”。