CVE-2003-0553: Netscape Navigator

High severity, CVSS 7.5. EPSS: 2.7% chance of exploitation in the next 30 days.

Buffer overflow in the Client Detection Tool (CDT) plugin (npcdt.dll) for Netscape 7.02 allows remote attackers to execute arbitrary code via an attachment with a long filename.

Affected products

• Netscape Navigator: version 7.0.2 only

Published 2003-08-18. Last modified 2026-06-16.