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CVE-2009-4309

36
FAUCET Score

CVE-2009-4309 is a critical heap-based buffer overflow in the Intel Indeo41 codec affecting Windows Media Player on Windows 2000, XP, and Server 2003. This vulnerability allows remote attackers to execute arbitrary code by crafting a malicious media file containing a large size value in an IV41 stream. With a CVSS score of 9.3, it is highly severe, requiring no authentication and having complete confidentiality, integrity, and availability impacts, though it requires user interaction to open the malicious file. Despite its high severity and EPSS score, there is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in the KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:microsoft:windows_media_player:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:itanium:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:x64:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
24.11%
Probability of exploitation in next 30 days
EPSS Percentile
97.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2411 is in the 90th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia nvd_reference
View patch

References

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