CVE-2011-1221: Realnetworks Realplayer

Medium severity, CVSS 4.3. EPSS: 0.9% chance of exploitation in the next 30 days.

Cross-zone scripting vulnerability in the RealPlayer ActiveX control in RealNetworks RealPlayer 11.0 through 11.1 and 14.0.0 through 14.0.5, RealPlayer SP 1.0 through 1.1.5, and RealPlayer Enterprise 2.0 through 2.1.5 allows remote attackers to inject arbitrary web script or HTML in the Local Zone via a local HTML document, a different vulnerability than CVE-2011-2947.

Affected products

• Realnetworks Realplayer: version 11.0 only; version 11.1 only; version 14.0.0 only; version 14.0.1 only; version 14.0.2 only; version 14.0.3 only; …
• Realnetworks Realplayer SP: version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.5 only; version 1.1 only; version 1.1.1 only; …

Published 2011-10-04. Last modified 2026-06-16.