CVE-2009-2533

rmserver in RealNetworks Helix Server and Helix Mobile Server before 13.0.0 allows remote...

5.0 MediumPublic exploit

rmserver in RealNetworks Helix Server and Helix Mobile Server before 13.0.0 allows remote attackers to cause a denial of service (daemon exit) via multiple RTSP SET_PARAMETER requests with empty DataConvertBuffer headers.

Exploit likelihood

3.40%Up 2.1 points since Feb 4, 2022

What each source reports

NVD Score used5.0

Record: CVE-2009-2533
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE ListNo score

Record: CVE-2009-2533
Updated: 2026-11-02

EUVDEUVD-2009-2528No score

Record: EUVD-2009-2528
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rf3m-97mp-6cvjNo score

rmserver in RealNetworks Helix Server and Helix Mobile Server before 13.0.0 allows remote...

Record: GHSA-rf3m-97mp-6cvj
Weakness: CWE-20
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Real Helix DNA - 'RTSP' / 'SETUP' Request Handler	2009-07-17

History

History
Recorded	Changed	Sources
Nov 10, 2026	facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-2533 is a medium vulnerability (CVSS 5.0) in Realnetworks Helix Server, published July 20, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.40%, the 89th percentile. No source names a fixed version.