CVE-2011-1525: Heap-based buffer overflow in rvrender.dll in RealNetworks RealPlayer 11.0 through 11.1 and 14.0.0 through...

Security readout for executives and security teams

This flaw affects older RealNetworks RealPlayer versions. A malicious IVR video file can trigger a heap buffer overflow in rvrender.dll and may allow code execution on the user’s machine. Business risk depends on whether these legacy media players remain installed or can open untrusted IVR files. Exposure is most likely on legacy workstations with affected RealPlayer versions installed, especially where users can receive or open untrusted IVR files. Modern environments may have low exposure if RealPlayer is absent or unsupported media players have been retired. Prioritize as a legacy endpoint cleanup issue with potentially high impact. If affected RealPlayer versions are still installed, remove or remediate them promptly because exploitation can occur through a crafted media file opened by a user. Mitigation focus: Inventory and remove affected RealPlayer versions where not required.; Check the RealNetworks advisory for vendor-approved update or remediation guidance.; Retire unsupported RealPlayer installations from managed endpoints..

Prepared

Jun 24, 2026, 13:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.