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Vulnerability record · CVE-2006-0323 · published 23 March 2006

CVE-2006-0323: Realnetworks helix player memory buffer overflow vulnerability

RRealnetworks · Helix Player

Buffer overflow in swfformat.dll in multiple RealNetworks products and versions including RealPlayer 10.x, RealOne Player, Rhapsody 3, and Helix Player allows remote attackers to execute arbitrary code via a crafted SWF (Flash) file with (1) a size value that is less than the actual size, or (2) other unspecified manipulations.

9.3 CVSS 2.0 High EPSS 17% · top 3.1% CWE-119 · Memory buffer overflow
9.3CVSS 2.0 base score
17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
30References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Buffer overflow in swfformat.dll in multiple RealNetworks products and versions including RealPlayer 10.x, RealOne Player, Rhapsody 3, and Helix Player allows remote attackers to execute arbitrary code via a crafted SWF (Flash) file with (1) a size value that is less than the actual size, or (2) other unspecified manipulations.

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/19362 PatchVendor Advisory
http://secunia.com/advisories/19365 PatchVendor Advisory
http://secunia.com/advisories/19390 Vendor Advisory
http://securityreason.com/securityalert/690
http://securitytracker.com/id?1015806
http://www.gentoo.org/security/en/glsa/glsa-200603-24.xml PatchVendor Advisory
http://www.kb.cert.org/vuls/id/231028 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-2006-0257.html PatchVendor Advisory
http://www.securityfocus.com/archive/1/430621/100/0/threaded
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
https://exchange.xforce.ibmcloud.com/vulnerabilities/25408
http://secunia.com/advisories/19358 Vendor Advisory
http://secunia.com/advisories/19362 PatchVendor Advisory
http://secunia.com/advisories/19365 PatchVendor Advisory
http://secunia.com/advisories/19390 Vendor Advisory
http://securityreason.com/securityalert/690
http://securitytracker.com/id?1015806
http://www.gentoo.org/security/en/glsa/glsa-200603-24.xml PatchVendor Advisory
http://www.kb.cert.org/vuls/id/231028 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-2006-0257.html PatchVendor Advisory
http://www.securityfocus.com/archive/1/430621/100/0/threaded
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
https://exchange.xforce.ibmcloud.com/vulnerabilities/25408

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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-2006-0323), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.