Microsoft » Windows 2000 : Security Vulnerabilities, CVEs, Published In 2012 CVSS score >= 3

Microsoft Windows 2008, 7, Vista, 2003, 2000, and XP, when using IPv6, allows remote attackers to determine whether a host is sniffing the network by sending an ICMPv6 Echo Request to a multicast address and determining whether an Echo Reply is sent, as demonstrated by thcping. NOTE: due to a typo, some sources map CVE-2010-4562 to a ProFTPd mod_sql vulnerability, but that issue is covered by CVE-2010-4652.

Untrusted search path vulnerability in Shell32.dll in Microsoft Windows 2000, Windows XP, Windows Vista, Windows Server 2008, and Windows 7, when using an environment configured with a string such as %APPDATA% or %PROGRAMFILES% in a certain way, allows local users to gain privileges via a Trojan horse DLL under the current working directory, as demonstrated by iTunes and Safari.