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CVE-2009-4248

27
FAUCET Score

CVE-2009-4248 is a buffer overflow vulnerability in the RTSPProtocol::HandleSetParameterRequest function affecting various RealNetworks RealPlayer versions (10, 10.5, 11, Enterprise, Mac, Linux) and Helix Player 10.x. This critical vulnerability, with a CVSS score of 9.3, allows remote unauthenticated attackers to cause a denial of service or potentially execute arbitrary code via a crafted RTSP SET_PARAMETER request, requiring medium attack complexity. Despite its high severity and potential for remote code execution, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
10.0CPE matchmatch criteria
cpe:2.3:a:realnetworks:realplayer:10.0:*:*:*:*:*:*:*
10.5CPE matchmatch criteria
cpe:2.3:a:realnetworks:realplayer:10.5:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:realnetworks:realplayer:11.0:*:*:*:*:*:*:*
11.0.1CPE matchmatch criteria
cpe:2.3:a:realnetworks:realplayer:11.0.1:*:*:*:*:*:*:*
11.0.2CPE matchmatch criteria
cpe:2.3:a:realnetworks:realplayer:11.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.83%
Probability of exploitation in next 30 days
EPSS Percentile
93.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0683 is in the 69th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: HelixPlayer-1:1.0.6-1.el4_8.1
View patch

Vendor Advisories (1)

redhatCVE-2009-4248Critical

RealPlayer: RTSP SET_PARAMETER buffer overflow

Jan 17, 2008

References

lists.helixcommunity.org / pipermail/client-cvs/2008-January/003756.html
lists.helixcommunity.org / pipermail/client-cvs/2008-January/003759.html
lists.helixcommunity.org / pipermail/client-dev/2008-January/004591.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/38218
Vendor Advisory
secunia.com / advisories/38450
securitytracker.com / id
Patch
service.real.com / realplayer/security/01192010_player/en
PatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/55801
helixcommunity.org / viewcvs/client/core/rtspprotocol.cpp
helixcommunity.org / viewcvs/client/core/rtspprotocol.cpp
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10641
redhat.com / support/errata/RHSA-2010-0094.html
securityfocus.com / bid/37880
vupen.com / english/advisories/2010/0178
PatchVendor Advisory