CVE-2011-4259: Realnetworks Realplayer

High severity, CVSS 9.3. EPSS: 2.9% chance of exploitation in the next 30 days.

Integer underflow in RealNetworks RealPlayer before 15.0.0 allows remote attackers to execute arbitrary code via a crafted width value in an MPG file.

Affected products

• Realnetworks Realplayer: up to and including 14.0.7; version 4 only; version 5 only; version 6 only; version 7 only; version 8 only; …

Published 2011-11-24. Last modified 2026-06-16.