CVE-2012-1904: Realnetworks Realplayer

Medium severity, CVSS 4.3. EPSS: 4.7% chance of exploitation in the next 30 days.

mp4fformat.dll in the QuickTime File Format plugin in RealNetworks RealPlayer 15 and earlier, and RealPlayer SP 1.1.4 Build 12.0.0.756 and earlier, allows remote attackers to cause a denial of service (memory corruption and application crash) via a crafted MP4 file.

Affected products

• Realnetworks Realplayer: up to and including 15.0.0; version 4 only; version 5 only; version 6 only; version 7 only; version 8 only; …
• Realnetworks Realplayer SP: up to and including 1.1.4; version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.5 only; version 1.1 only; …

Published 2012-03-28. Last modified 2026-06-16.