CVE-2009-1539

Directx vulnerability

CVSS

9.3

EPSS

25.8%

EPSS pct

98th

Exploited

No known

The QuickTime Movie Parser Filter in quartz.dll in DirectShow in Microsoft DirectX 7.0 through 9.0c on Windows 2000 SP4, Windows XP SP2 and SP3, and Windows Server 2003 SP2 does not properly validate unspecified size fields in QuickTime media files, which allows remote attackers to execute arbitrary code via a crafted file, aka "DirectX Size Validation Vulnerability."

Affected vendor

Microsoft

Affected product

Directx

CVSS vector

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

Weakness type (CWE)

CWE-94 — Code Injection

Published

2009-07-15

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 25.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2009-1539

Confirm whether Microsoft Directx is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2009-1539.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-1539

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