CVE-2002-2248: Netscape Communicator

High severity, CVSS 10.0. EPSS: 5.8% chance of exploitation in the next 30 days.

Buffer overflow in the sun.awt.windows.WDefaultFontCharset Java class implementation in Netscape 4.0 allows remote attackers to execute arbitrary code via an applet that calls the WDefaultFontCharset constructor with a long string and invokes the canConvert method.

Affected products

• Netscape Communicator: version 4.0 only; version 4.5 only; version 4.6 only; version 4.7 only; version 4.51 only; version 4.61 only; …

Published 2002-12-31. Last modified 2026-06-16.