$ cve CVE-2003-0838 JSON

CVE-2003-0838 EXPLOIT

7.5

HIGH · CVSS 2.0 · EPSS 37.6% (pctl 98)

Patch early

A public exploit exists.

Description

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).

Scoring

CVSS	7.5 (HIGH, v2.0)
Vector	AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS	37.56% — more likely to be exploited than 98% of all CVEs
On CISA KEV	no
Public exploit	yes
Published	2003-11-17
Last modified	2026-06-16

Affected (2)

Vendor	Product
microsoft	ie
microsoft	internet explorer

Public exploits

Source	Title	Date
exploit-db	Microsoft Internet Explorer 5/6 - Browser Popup Window Object Type Validation	2003-09-07

References

→ the Explorer · watch your stack · NVD