Exposure of Sensitive Information to an Unauthorized Actor
Microsoft Internet Explorer before 10 allows remote attackers to obtain sensitive information about the existence of files, and read certain data from files, via a UNC share pathname in the SRC attribute of a SCRIPT element, as demonstrated by reading a name-value pair from a local file via a \\127.0.0.1\C$\ sequence.
CWE-200 - Information Exposure
An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.