CVE-2004-0839

What it is

Internet Explorer in Windows XP SP2, and other versions including 5.01 and 5.5, allows remote attackers to install arbitrary programs via a web page that uses certain styles and the AnchorClick behavior, popup windows, and drag-and-drop capabilities to drop the program in the local startup folder, as demonstrated by "wottapoop.html".

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

34.0% 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. 2004-08-18 04:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:06 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 34.0% in the next 30 days (EPSS).
• Severity: 5.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2004-08-18 04:00 UTC

Last modified

2026-06-16 22:06 UTC

Exploit probability

34.0% · EPSS, next 30 days

Record status

Modified

Affected

• Avaya ip600 Media Servers
• Microsoft Ie 6.0
• Microsoft Internet Explorer 5.0.1
• Microsoft Internet Explorer 5.5
• Microsoft Internet Explorer 6.0
• Avaya Definity One Media Server
• Avaya s3400
• Avaya s8100

Attack profile CVSS 2.0 · 5.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

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-2004-0839.md and follow it. Check whether this project is affected by CVE-2004-0839. 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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