What’s Vulnerable › Vulnerabilities

CVE-2003-0896

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 14.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2003-11-17 · updated 2026-06-16

Description

The loadClass method of the sun.applet.AppletClassLoader class in the Java Virtual Machine (JVM) in Sun SDK and JRE 1.4.1_03 and earlier allows remote attackers to bypass sandbox restrictions and execute arbitrary code via a loaded class name that contains "/" (slash) instead of "." (dot) characters, which bypasses a call to the Security Manager's checkPackageAccess method.

Affected products

• Sun Jre: through 1.4.1

References

• http://lsd-pl.net/code/JVM/jre.tar.gz
• http://marc.info/?l=bugtraq&m=106692334503819&w=2
• http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert/57221
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-200356-1
• http://www.securityfocus.com/advisories/6028
• http://www.securityfocus.com/archive/1/342580
• http://www.securityfocus.com/archive/1/342583
• http://www.securityfocus.com/bid/8879
• http://lsd-pl.net/code/JVM/jre.tar.gz
• http://marc.info/?l=bugtraq&m=106692334503819&w=2
• http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert/57221
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-200356-1

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