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Fencer Vulns
high 7.5

CVE-2003-0838 in the critical feed json

Internet Explorer allows remote attackers to bypass zone restrictions to inject and execute arbitrary programs by creating a popup window a…

published 2003-10-07 23 y ago modified 2026-06-16 4 mo ago also EUVD-2003-0829

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
37.6%
EPSS 37.6% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

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).

Timeline

  1. First public exploit (EDB-23114)
  2. Published

Exploit prediction

37.56% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-23114 Microsoft Internet Explorer 5/6 - Browser Popup Window Object Type Validation remote, 2003-09-07

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.