CVE-2010-4376

Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0...

9.3 High

Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.1, Mac RealPlayer 11.0 through 11.1, and Linux RealPlayer 11.0.2.1744 allows remote attackers to execute arbitrary code via a large Screen Width value in the Screen Descriptor header of a GIF87a file in an RTSP stream.

Exploit likelihood

6.29%Unchanged since Feb 4, 2022

What each source reports

NVD Score used 9.3

Record: CVE-2010-4376
CVSS 2.0: 9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2010-4376
Updated: 2026-11-02

EUVDEUVD-2010-4345 No score

Record: EUVD-2010-4345
Updated: 2026-11-03

GitHub AdvisoriesGHSA-5p9m-hxc7-hpwp No score

Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0...

Record: GHSA-5p9m-hxc7-hpwp
Weakness: CWE-119
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`HelixPlayer` Red 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-debuginfo` Red 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` Red 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-debuginfo` Red 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` Red 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-debuginfo` Red 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` Red 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-debuginfo` Red 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

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2010-4376 is a high vulnerability (CVSS 9.3) in Realnetworks Realplayer, published December 14, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.29%, the 93rd percentile. No source names a fixed version.

References

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