CVE-2002-1643: Realnetworks Helix Universal Server

High severity, CVSS 7.5. EPSS: 74.7% chance of exploitation in the next 30 days.

Multiple buffer overflows in RealNetworks Helix Universal Server 9.0 (9.0.2.768) allow remote attackers to execute arbitrary code via (1) a long Transport field in a SETUP RTSP request, (2) a DESCRIBE RTSP request with a long URL argument, or (3) two simultaneous HTTP GET requests with long arguments.

Affected products

• Realnetworks Helix Universal Server: version 9.0 only; version 9.0.2.768 only

Published 2002-12-19. Last modified 2026-06-16.