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Vulnerability record · CVE-2010-4378 · published 14 December 2010

CVE-2010-4378: Realnetworks realplayer memory buffer overflow vulnerability

RRealnetworks · Realplayer

The drv2.dll (aka RV20 decompression) module in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, RealPlayer Enterprise 2.1.2 and 2.1.3, Linux RealPlayer 11.0.2.1744, and possibly HelixPlayer 1.0.6 and other versions, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via a crafted value of an unspecified length field in an RV20 video stream.

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
2Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

The drv2.dll (aka RV20 decompression) module in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, RealPlayer Enterprise 2.1.2 and 2.1.3, Linux RealPlayer 11.0.2.1744, and possibly HelixPlayer 1.0.6 and other versions, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via a crafted value of an unspecified length field in an RV20 video stream.

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

Affected products

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

References

LinkTags
http://service.real.com/realplayer/security/12102010_player/en/ Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2010-0981.html
http://www.securitytracker.com/id?1024861
http://www.zerodayinitiative.com/advisories/ZDI-10-274
http://service.real.com/realplayer/security/12102010_player/en/ Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2010-0981.html
http://www.securitytracker.com/id?1024861
http://www.zerodayinitiative.com/advisories/ZDI-10-274

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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-2010-4378), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.