CVE-2004-0387: Realnetworks Realone Player

Medium severity, CVSS 5.1. EPSS: 3.2% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the RT3 plugin, as used in RealPlayer 8, RealOne Player, RealOne Player 10 beta, and RealOne Player Enterprise, allows remote attackers to execute arbitrary code via a malformed .R3T file.

Affected products

• Realnetworks Realone Player: any version; version 10_beta only
• Realnetworks Realplayer: version 8.0 only

Published 2004-06-01. Last modified 2026-06-16.