CVE-2009-4247
Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10;...
Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.x; RealPlayer SP 1.0.0 and 1.0.1; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, 11.0, and 11.0.1; Linux RealPlayer 10, 11.0.0, and 11.0.1; and Helix Player 10.x, 11.0.0, and 11.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an ASM RuleBook with a large number of rules, related to an "array overflow."
Exploit likelihood
What each source reports
NVD Score used
Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.x; RealPlayer SP 1.0.0 and 1.0.1; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, 11.0, and 11.0.1; Linux RealPlayer 10, 11.0.0, and 11.0.1; and Helix Player 10.x, 11.0.0, and 11.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an ASM RuleBook with a large number of rules, related to an "array overflow."
- Record
CVE-2009-4247- CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.x; RealPlayer SP 1.0.0 and 1.0.1; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, 11.0, and 11.0.1; Linux RealPlayer 10, 11.0.0, and 11.0.1; and Helix Player 10.x, 11.0.0, and 11.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an ASM RuleBook with a large number of rules, related to an "array overflow."
- Record
CVE-2009-4247- Updated
- 2026-11-02
EUVDEUVD-2009-4216 No score
Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.x; RealPlayer SP 1.0.0 and 1.0.1; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, 11.0, and 11.0.1; Linux RealPlayer 10, 11.0.0, and 11.0.1; and Helix Player 10.x, 11.0.0, and 11.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an ASM RuleBook with a large number of rules, related to an "array overflow."
- Record
EUVD-2009-4216- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9h7f-xvfq-hm25 No score
Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10;...
Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.x; RealPlayer SP 1.0.0 and 1.0.1; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, 11.0, and 11.0.1; Linux RealPlayer 10, 11.0.0, and 11.0.1; and Helix Player 10.x, 11.0.0, and 11.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an ASM RuleBook with a large number of rules, related to an "array overflow."
- Record
GHSA-9h7f-xvfq-hm25- Weakness
- CWE-119
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
HelixPlayerRed Hat:enterprise_linux:4::as From an advisory covering 8 CVEs |
before 1:1.0.6-1.el4_8.1 | 1:1.0.6-1.el4_8.1 |
HelixPlayer-debuginfoRed Hat:enterprise_linux:4::as From an advisory covering 8 CVEs |
before 1:1.0.6-1.el4_8.1 | 1:1.0.6-1.el4_8.1 |
HelixPlayerRed Hat:enterprise_linux:4::desktop From an advisory covering 8 CVEs |
before 1:1.0.6-1.el4_8.1 | 1:1.0.6-1.el4_8.1 |
HelixPlayer-debuginfoRed Hat:enterprise_linux:4::desktop From an advisory covering 8 CVEs |
before 1:1.0.6-1.el4_8.1 | 1:1.0.6-1.el4_8.1 |
HelixPlayerRed Hat:enterprise_linux:4::es From an advisory covering 8 CVEs |
before 1:1.0.6-1.el4_8.1 | 1:1.0.6-1.el4_8.1 |
HelixPlayer-debuginfoRed Hat:enterprise_linux:4::es From an advisory covering 8 CVEs |
before 1:1.0.6-1.el4_8.1 | 1:1.0.6-1.el4_8.1 |
HelixPlayerRed Hat:enterprise_linux:4::ws From an advisory covering 8 CVEs |
before 1:1.0.6-1.el4_8.1 | 1:1.0.6-1.el4_8.1 |
HelixPlayer-debuginfoRed Hat:enterprise_linux:4::ws From an advisory covering 8 CVEs |
before 1:1.0.6-1.el4_8.1 | 1:1.0.6-1.el4_8.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-4247 is a high vulnerability (CVSS 9.3) in Realnetworks Helix Player, published January 25, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.81%, the 94th percentile. No source names a fixed version.
References
redhat.com/support/errata/RHSA-2010-0094.html
vupen.com/english/advisories/2010/0178
securitytracker.com/id?1023489
service.real.com/realplayer/security/01192010_player/en
secunia.com/advisories/38450
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10677
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lists.helixcommunity.org/pipermail/protocol-cvs/2009-August/001943.html
helixcommunity.org/viewcvs/protocol/rtsp/rtspclnt.cpp?view=log
bugzilla.redhat.com/show_bug.cgi?id=561338
securityfocus.com/bid/37880
exchange.xforce.ibmcloud.com/vulnerabilities/55802
nvd.nist.gov/vuln/detail/CVE-2009-4247
github.com/advisories/GHSA-9h7f-xvfq-hm25
access.redhat.com/errata/RHSA-2010:0094
security.access.redhat.com/data/csaf/v2/advisories/2010/rhsa-2010_0094.json
cve.org/CVERecord?id=CVE-2009-4242