CVE-2005-0755: Realnetworks Helix Player

Medium severity, CVSS 5.1. EPSS: 3.4% chance of exploitation in the next 30 days.

Heap-based buffer overflow in RealPlayer 10 and earlier, Helix Player before 10.0.4, and RealOne Player v1 and v2 allows remote attackers to execute arbitrary code via a long hostname in a RAM file.

Affected products

• Realnetworks Helix Player: up to and including 10.0.3
• Realnetworks Realone Player: version 1.0 only; version 2.0 only
• Realnetworks Realplayer: version 8.0 only; version 10.0 only; version 10.0_6.0.12.690 only

Published 2005-04-19. Last modified 2026-06-16.