Microsoft is investigating two recently disclosed security vulnerabilities that affect Internet Explorer 7 and Windows Vista...The vulnerabilities aren't considered high-risk, yet they affect the latest releases of Microsoft's Web browser and operating system software. Microsoft has promoted the security of both IE 7 and Windows Vista. The flaws could let attackers get their hands on sensitive user information, security experts have warned...Upon completion of its investigations, Microsoft may issue a security advisory or provide security updates through its monthly patch process.