The RegEx class in the XSS filter in Microsoft Edge allows remote attackers to conduct cross-site scripting (XSS) attacks and obtain sensitive information via unspecified vectors, aka "Microsoft Edge Information Disclosure Vulnerability." This vulnerability is different from those described in CVE-2017-0009, CVE-2017-0011, CVE-2017-0065, and CVE-2017-0068.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0017