CVE-2009-4309

Heap-based buffer overflow in the Intel Indeo41 codec for Windows Media Player in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 allows remote attackers to execute arbitrary code via a large size value in a movi record in an IV41 stream in a media file, as demonstrated by an AVI file.

Published: 2009-12-13 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4309 is rated High Risk (66.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 24.11%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-4309

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 30.58% 24.11% -6.47%
2 2025-12-28 28.19% 30.58% +2.39%
3 2025-12-27 — 28.19% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4309

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2009-4309

Affected software / configurations for CVE-2009-4309

Vendor Product Version Raw CPE
microsoft windows_media_player — cpe:2.3:a:microsoft:windows_media_player:*:*:*:*:*:*:*:*
microsoft windows_2000 — cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*
microsoft windows_2003_server — cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*
microsoft windows_2003_server — cpe:2.3:o:microsoft:windows_2003_server:*:sp2:itanium:*:*:*:*:*
microsoft windows_2003_server — cpe:2.3:o:microsoft:windows_2003_server:*:sp2:x64:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:*

References for CVE-2009-4309

URL Tags
http://secunia.com/advisories/37592 Vendor Advisory
http://securitytracker.com/id?1023302 Patch
http://support.microsoft.com/kb/954157 Patch Vendor Advisory
http://support.microsoft.com/kb/955759 Patch Vendor Advisory
http://support.microsoft.com/kb/976138 Patch Vendor Advisory
http://www.microsoft.com/technet/security/advisory/954157.mspx Patch Vendor Advisory
http://www.osvdb.org/60855
http://www.securityfocus.com/archive/1/508324/100/0/threaded
http://www.securityfocus.com/bid/37251
http://www.vupen.com/english/advisories/2009/3440 Vendor Advisory
http://zerodayinitiative.com/advisories/ZDI-09-089/
https://exchange.xforce.ibmcloud.com/vulnerabilities/54642
https://exchange.xforce.ibmcloud.com/vulnerabilities/54645
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12188
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