Sun JRE 5.0 before update 14 allows remote attackers to cause a denial of service (Internet Explorer crash) via an object tag with an encoded applet and an undefined name attribute, which triggers a NULL pointer dereference in jpiexp32.dll when the applet is decoded and passed to the JVM.

Unspecified vulnerability in the Java Runtime Environment (JRE) Swing library in JDK and JRE 5.0 Update 7 and earlier allows attackers to obtain certain information via unknown attack vectors, related to an untrusted applet accessing data in other applets.

Vulnerability in Java Runtime Environment (JRE) allows remote malicious web sites to hijack or sniff a web client's sessions, when an HTTP proxy is being used, via a Java applet that redirects the session to another server, as seen in (1) Netscape 6.0 through 6.1 and 4.79 and earlier, (2) Microsoft VM build 3802 and earlier as used in Internet Explorer 4.x and 5.x, and possibly other implementations that use vulnerable versions of SDK or JDK.