CVE-2007-4561: Realnetworks Helix Dna Server

High severity, CVSS 10.0. EPSS: 5.5% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the RTSP service in Helix DNA Server before 11.1.4 allows remote attackers to execute arbitrary code via an RSTP command containing multiple Require headers.

Affected products

• Realnetworks Helix Dna Server: version 10.0 only; version 11.0 only; version 11.1 only; version 11.1.2 only; version 11.1.3 only

Published 2007-08-28. Last modified 2026-06-16.