What’s Vulnerable › Vulnerabilities

CVE-2003-1328

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 38.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2003-02-19 · updated 2026-06-16

Description

The showHelp() function in Microsoft Internet Explorer 5.01, 5.5, and 6.0 supports certain types of pluggable protocols that allow remote attackers to bypass the cross-domain security model and execute arbitrary code, aka "Improper Cross Domain Security Validation with ShowHelp functionality."

Affected products

• Microsoft Ie: 6.0-sp1
• Microsoft Internet Explorer 11: 5.0.1, 5.0.1-sp1, 5.0.1-sp2, 5.0.1-sp3, 5.5, 5.5-sp1 (+2)

References

• http://archives.neohapsis.com/archives/bugtraq/2003-02/0083.html
• http://www.ciac.org/ciac/bulletins/n-038.shtml
• http://www.iss.net/security_center/static/11259.php
• http://www.kb.cert.org/vuls/id/400577
• http://www.securityfocus.com/bid/6780
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-004
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A57
• http://archives.neohapsis.com/archives/bugtraq/2003-02/0083.html
• http://www.ciac.org/ciac/bulletins/n-038.shtml
• http://www.iss.net/security_center/static/11259.php
• http://www.kb.cert.org/vuls/id/400577
• http://www.securityfocus.com/bid/6780

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