CVE-2007-3164: Microsoft Internet Explorer 7, when prompting for HTTP Basic Authentication for an IDN web site, uses ACE l...

Security readout for executives and security teams

Internet Explorer 7 could present an internationalized domain name differently in two places during an HTTP Basic Authentication prompt. A user might trust the login dialog while missing a confusing or deceptive domain display, creating a phishing path for credential theft. Exposure is limited to users who still use Microsoft Internet Explorer 7 and encounter HTTP Basic Authentication prompts on IDN domains. The provided data does not identify affected server products, APIs, or modern browser versions. Prioritize remediation if any legacy IE7 use remains, especially in environments where users access external sites or Basic Authentication portals. If IE7 is absent, this is mainly a historical risk to document and close through legacy-browser controls. Mitigation focus: Retire or block Internet Explorer 7 across managed endpoints.; Check Microsoft or vendor guidance for any historical fix or workaround.; Avoid relying on HTTP Basic Authentication for public-facing IDN sites..

Prepared

Jun 29, 2026, 05:15 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.