CVE-2009-1546

What it is

Integer overflow in Avifil32.dll in the Windows Media file handling functionality in Microsoft Windows allows remote attackers to execute arbitrary code on a Windows 2000 SP4 system via a crafted AVI file, or cause a denial of service on a Windows XP SP2 or SP3, Server 2003 SP2, Vista Gold, SP1, or SP2, or Server 2008 Gold or SP2 system via a crafted AVI file, aka "AVI Integer Overflow Vulnerability."

At a glance

Exploitability

Can be exploited over the network with a login. High risk of data exposure, data tampering, service disruption.

Exploit odds

22.5% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2009-08-12 17:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:07 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 22.5% in the next 30 days (EPSS).
• Severity: 8.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2009-08-12 17:30 UTC

Last modified

2026-06-16 23:07 UTC

Exploit probability

22.5% · EPSS, next 30 days

Weakness

CWE-189

Record status

Modified

Affected

• Microsoft Windows 2003 Server sp2
• Microsoft Windows Server 2008
• Microsoft Windows Vista
• Microsoft Windows Xp

Attack profile CVSS 2.0 · 8.5

Attack vector

Network

Complexity

Medium

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-1546.md and follow it. Check whether this project is affected by CVE-2009-1546. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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