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CVE-2009-2534

27
FAUCET Score

CVE-2009-2534 describes a denial-of-service vulnerability affecting RealNetworks Helix Server and Helix Mobile Server versions prior to 13.0.0. Remote attackers can crash the server daemon by sending a specially crafted RTSP SETUP request that either specifies the root URI (/) or omits a forward slash from the URI. This vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited remotely with low attack complexity, resulting in a partial availability impact. While there is no evidence of active exploitation, a public exploit (EDB-9198) exists, though there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 12.0.1CPE matchmatch criteria
cpe:2.3:a:realnetworks:helix_server:*:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:realnetworks:helix_server:11.0:*:*:*:*:*:*:*
12.0.0CPE matchmatch criteria
cpe:2.3:a:realnetworks:helix_server:12.0.0:*:*:*:*:*:*:*
<= 12.0.0CPE matchmatch criteria
cpe:2.3:a:realnetworks:helix_server_mobile:*:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:realnetworks:helix_server_mobile:11.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
8.83%
Probability of exploitation in next 30 days
EPSS Percentile
94.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-9198 · Jul 17, 2009
This CVE's current EPSS score of 0.0883 is in the 93rd percentile among its peer group of 23,725 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.real.com / docs/security/SecurityUpdate071409HS.pdf
osvdb.org / 55982
coresecurity.com / content/real-helix-dna
Exploit
exploit-db.com / exploits/9198
securityfocus.com / archive/1/505083/100/0/threaded
securityfocus.com / bid/35732
vupen.com / english/advisories/2009/1947