How severe is CVE-2009-2499?

CVE-2009-2499 has a CVSS 2.0 base score of 8.5, rated high severity.

Is CVE-2009-2499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2499?

CVE-2009-2499 primarily affects Microsoft Windows Media Format Runtime. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-2499 published?

CVE-2009-2499 was published on 2009-09-08 and last updated on 2026-06-16.

CVE-2009-2499

CVE-2009-2499 is a high-severity vulnerability in Microsoft Windows Media Format Runtime with a CVSS 2.0 base score of 8.5. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 2.0 base score 8.5)
EPSS exploit prediction: 16% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Microsoft Windows Media Format Runtime
Published: 2009-09-08
Last modified: 2026-06-16

Description

Microsoft Windows Media Format Runtime 9.0, 9.5, and 11; and Microsoft Media Foundation on Windows Vista Gold, SP1, and SP2 and Server 2008; allows remote attackers to execute arbitrary code via an MP3 file with crafted metadata that triggers memory corruption, aka "Windows Media Playback Memory Corruption Vulnerability."

Frequently asked questions

What is CVE-2009-2499?: Microsoft Windows Media Format Runtime 9.0, 9.5, and 11; and Microsoft Media Foundation on Windows Vista Gold, SP1, and SP2 and Server 2008; allows remote attackers to execute arbitrary code via an MP3 file with crafted metadata that triggers memory corruption, aka "Windows Media Playback Memory Corruption Vulnerability."
How severe is CVE-2009-2499?: CVE-2009-2499 has a CVSS 2.0 base score of 8.5, rated high severity.
Is CVE-2009-2499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2499?: CVE-2009-2499 primarily affects Microsoft Windows Media Format Runtime. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-2499 published?: CVE-2009-2499 was published on 2009-09-08 and last updated on 2026-06-16.

References

Affected products (24)

cpe:2.3:a:microsoft:windows_media_format_runtime:9.0:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_format_runtime:9.5:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:professional_x64:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_format_runtime:9.5:*:x64:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_format_runtime:11:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:-:x32:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:-:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:x86:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:*:*:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:*:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_services:9.1:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_services:2008:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_foundation:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:-:-:x64:*:*:*:*:*

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