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The Microsoft.XMLDOM ActiveX control in Microsoft Windows 8.1 and earlier allows remote attackers to determine the existence of local pathnames, UNC share pathnames, intranet hostnames, and intranet IP addresses by examining error codes, as demonstrated by a res:// URL, and exploited in the wild in February 2014.
Use CWE-200, Microsoft vendor hub and Internet Explorer product page to widen CVE-2013-7331 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2021-27085, CVE-2021-26411 and CVE-2020-0878 for nearby disclosures in the same product family. Additional editorial context is available in Weekly Security Roundup: Navigating the April 2026 Threat Landscape and Critical Framework Exploits.