Internet Explorer 5.x and Microsoft Outlook allows remote attackers to read arbitrary files by redirecting the contents of an IFRAME using the DHTML Edit Control (DHTMLED).
From 神龙GPT (AIGC)
Internet Explorer 5.x 和 Microsoft Outlook 允许远程攻击者通过使用 DHTML Edit Control(DHTMLED)将 iframe 的内容重定向，读取任意文件。