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CVE-2003-0838

Internet Explorer allows remote attackers to bypass zone restrictions to inject and execute arbitrary programs by creating a popup window and inserting ActiveX object code with a "data" tag pointing to the malicious code, which Internet Explorer treats as HTML or Javascript, but later executes as an HTA application, a different vulnerability than CVE-2003-0532, and as exploited using the QHosts Trojan horse (aka Trojan.Qhosts, QHosts-1, VBS.QHOSTS, or aolfix.exe).

Published: Nov 17, 2003 Modified: Jun 16, 2026

CVSS Metrics

Affected Products (9)

Vendor Product Version
microsoft ie 6.0
microsoft internet_explorer 5.0.1
microsoft internet_explorer 5.0.1
microsoft internet_explorer 5.0.1
microsoft internet_explorer 5.0.1
microsoft internet_explorer 5.5
microsoft internet_explorer 5.5
microsoft internet_explorer 5.5
microsoft internet_explorer 6.0

GitHub Security Advisory GHSA-rjqq-fhgc-2rj8

Internet Explorer allows remote attackers to bypass zone restrictions to inject and execute...

Risk Scores

CVSS Score 7.5 / 10
EPSS Score 35.29%

Top 2% most likely to be exploited

Threat Score 40.6 / 100

Data Sources

NVD EPSS GitHub