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Vulnerability record · CVE-2005-2922 · published 31 December 2005

CVE-2005-2922: Realnetworks helix player memory buffer overflow vulnerability

RRealnetworks · Helix Player

Heap-based buffer overflow in the embedded player in multiple RealNetworks products and versions including RealPlayer 10.x, RealOne Player, and Helix Player allows remote malicious servers to cause a denial of service (crash) and possibly execute arbitrary code via a chunked Transfer-Encoding HTTP response in which either (1) the chunk header length is specified as -1, (2) the chunk header with a length that is less than the actual amount of sent data, or (3) a missing chunk header.

9.3 CVSS 2.0 High EPSS 5.8% · top 7.2% CWE-119 · Memory buffer overflow
9.3CVSS 2.0 base score
5.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
24References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Heap-based buffer overflow in the embedded player in multiple RealNetworks products and versions including RealPlayer 10.x, RealOne Player, and Helix Player allows remote malicious servers to cause a denial of service (crash) and possibly execute arbitrary code via a chunked Transfer-Encoding HTTP response in which either (1) the chunk header length is specified as -1, (2) the chunk header with a length that is less than the actual amount of sent data, or (3) a missing chunk header.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/19358 Vendor Advisory
http://secunia.com/advisories/19365 PatchVendor Advisory
http://securitytracker.com/id?1015808
http://www.kb.cert.org/vuls/id/172489 PatchThird Party AdvisoryUS Government Resource
http://www.novell.com/linux/security/advisories/2006_18_realplayer.html PatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2005-762.html PatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2005-788.html PatchVendor Advisory
http://www.securityfocus.com/bid/17202 Exploit
http://www.service.real.com/realplayer/security/03162006_player/en/ Patch
http://www.vupen.com/english/advisories/2006/1057 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/25409
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11444
http://secunia.com/advisories/19358 Vendor Advisory
http://secunia.com/advisories/19365 PatchVendor Advisory
http://securitytracker.com/id?1015808
http://www.kb.cert.org/vuls/id/172489 PatchThird Party AdvisoryUS Government Resource
http://www.novell.com/linux/security/advisories/2006_18_realplayer.html PatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2005-762.html PatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2005-788.html PatchVendor Advisory
http://www.securityfocus.com/bid/17202 Exploit
http://www.service.real.com/realplayer/security/03162006_player/en/ Patch
http://www.vupen.com/english/advisories/2006/1057 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/25409
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11444

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2011-4256Realnetworks realplayer code injection vulnerabilityThe RV30 codec in RealNetworks RealPlayer before 15.0.0 and Mac RealPlayer before 12.0.0.1703 does not initialize an unspecified index value, which a…EPSS 4.3%10.0CVE-2011-4246Realnetworks realplayer memory buffer overflow vulnerabilityThe AAC codec in RealNetworks RealPlayer before 15.0.0 and Mac RealPlayer before 12.0.0.1703 allows remote attackers to execute arbitrary code or cau…EPSS 4.0%10.0CVE-2011-4249Realnetworks realplayer improper input validation vulnerabilityArray index error in the RV30 codec in RealNetworks RealPlayer before 15.0.0 allows remote attackers to execute arbitrary code via unspecified vector…EPSS 3.3%10.0CVE-2011-4250Realnetworks realplayer vulnerabilityUnspecified vulnerability in the ATRC codec in RealNetworks RealPlayer before 15.0.0 and Mac RealPlayer before 12.0.0.1703 allows remote attackers to…EPSS 4.1%10.0CVE-2011-4253Realnetworks realplayer vulnerabilityUnspecified vulnerability in the RV20 codec in RealNetworks RealPlayer before 15.0.0 and Mac RealPlayer before 12.0.0.1703 allows remote attackers to…EPSS 4.1%10.0CVE-2011-4254Realnetworks realplayer code injection vulnerabilityRealNetworks RealPlayer before 15.0.0 allows remote attackers to execute arbitrary code via a crafted RTSP SETUP request.EPSS 3.4%10.0CVE-2011-4255Realnetworks realplayer vulnerabilityUnspecified vulnerability in RealNetworks RealPlayer before 15.0.0 and Mac RealPlayer before 12.0.0.1703 allows remote attackers to execute arbitrary…EPSS 4.1%10.0CVE-2011-4244Realnetworks realplayer memory buffer overflow vulnerabilityHeap-based buffer overflow in the RealVideo renderer in RealNetworks RealPlayer before 15.0.0 allows remote attackers to execute arbitrary code via u…EPSS 3.4%

Source: NIST National Vulnerability Database (record CVE-2005-2922), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.