CVE-2009-1537highunder attackCWE-158

CVE-2009-1537

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63Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has an official Brazilian government alert.

ssvc Actcvss 8.8epss 51%
from disclosure to weapon
Published on NVDMay 29
CISA KEV+6200d
Official alert in Brazil

Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.

Source: CTIR Gov (GSI) and CISC Gov.br, under the CC BY-ND 3.0 license.
Action required by CISAfederal deadline: 2026-06-03

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

In short

A flaw in Microsoft's QuickTime video player component allows attackers to run malicious code by sending a specially crafted video file. This vulnerability was actively exploited by hackers in May 2009.

Technical detail

The QuickTime Movie Parser Filter in DirectShow (quartz.dll) contains an unspecified vulnerability (CWE-158) that permits remote code execution when processing a crafted QuickTime media file. Attack vector is network-based (via malicious file delivery); pre-condition is user interaction (opening the file). Impact is complete system compromise with arbitrary code execution at user privilege level.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Unspecified vulnerability in 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 allows remote attackers to execute arbitrary code via a crafted QuickTime media file, as exploited in the wild in May 2009, aka "DirectX NULL Byte Overwrite Vulnerability."
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
n/a · n/a