CVE-2010-0255: Microsoft Internet Explorer 5.01 SP4, 6, 6 SP1, 7, and 8 does not prevent rendering of non-HTML local files...

Security readout for executives and security teams

This older Internet Explorer flaw could let a malicious web page make the browser treat some local non-HTML files as HTML and expose local data it should not read. The bundle shows no CISA KEV listing or active exploitation evidence. Urgency depends on whether any systems still use IE 5.01 through 8. Exposure is most likely on legacy Windows endpoints, kiosk systems, appliances, or business applications that still launch affected Internet Explorer versions. Modern browsers are not identified as affected in the provided sources. Prioritize this when legacy Internet Explorer is still present in operational environments. The vulnerability can expose local data through web browsing, but there is no source-backed active exploitation signal in the bundle. Mitigation focus: Apply Microsoft guidance and updates from MS10-035 and advisory 980088.; Remove or isolate systems that require affected Internet Explorer versions.; Restrict web browsing from legacy hosts until vendor remediation is confirmed..

Prepared

Jun 28, 2026, 03:36 UTC (UTC+00:00)

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