CVE-2004-0839

Public exploit available. Not confirmed exploited in the wild yet. A vendor fix is available.

CVSS 2.05.0Medium EPSS percentile98th34% chance in 30 days CISA KEVNot listedNo confirmed exploitation
Public exploit: 1 source FixVendor fixNo build named by the sources

Published 2004-09-14Updated 2026-04-16Sources: CVE.org, NVD

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

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".

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS98th

Public exploit

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in

EPSS

34% chance of exploitation activity in the next 30 days, which ranks it in the 98th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

A public exploit existed 40 days before the patch.

2026-06-25OpenVAS check added
2026-04-16Patch availablerecord updated
2026-03-06Public exploit / PoCsource: other
2004-09-14Publishedweakness classified

Affected products

microsoftcommercial · US
- ieDesktop AppOn-premConsumer Software / browser
- internet explorerDesktop AppOn-premConsumer Software / browser
- windows 2000OSOperating Systems / windows
- windows 2003 serverOSOperating Systems / windows
- windows 98seOSOn-premOperating Systems / windows
- windows meOSOn-premOperating Systems / windows
avayacommercial · USaka avaya communication manager, s8300
nortelcommercial · CAaka contivity, business communications manager, mobile voice client 2050

And 3 more affected products. See all after sign-in

Technical detail

CVSS 2.0 vector

Open in the CVSS calculator

AV:N/AC:L/Au:N/C:N/I:P/A:N

Scored 5.0 by NVD.

How it is reached

Access Vector NetworkExploitable remotely over the network
Access Complexity LowNo special conditions required
Authentication NoneNo authentication required

Impact if exploited

Confidentiality NoneNo confidentiality impact
Integrity PartialSome data can be modified
Availability NoneNo availability impact

Weaknesses

NVD-CWE-OtherNo name in the record

Sources

References in the record

And 11 more references. See all after sign-in

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