CVE-2004-0839Internet Explorer Vulnerability
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…
Published Aug 18, 2004 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2004-0839 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Ip600 Media Servers (Avaya), Ie (Microsoft), Internet Explorer (Microsoft) and 15 more products.
- It is exploited in the wild, listed in Industry KEV feed since Nov 9, 2004. No public exploit code is known.
- EPSS estimates a 34% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v2
5.0
AV:N/AC:L/Au:N/C:N/I:P/A:N
EPSS (30-day exploit likelihood)
34%
Higher than 98.3% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
43/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Nov 9, 2004
83 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
- advisory20040818 What A Drag II XP SP2
- patchVU#526089
- patch10973
- patchTA04-293A
Description
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".
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Nov 9, 2004 | n/a | Not reported |
Affected Products
46 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Ip600 Media ServersAvaya | See advisory | n/a |
| IeMicrosoft | 6.0-sp1, 6.0-sp2 | n/a |
| Internet ExplorerMicrosoft | 5.0.1, 5.0.1-sp1, 5.0.1-sp2, 5.0.1-sp3, 5.0.1-sp4, 5.5, 5.5-sp1, 5.5-sp2 | n/a |
| Ip Softphone 2050Nortel | See advisory | n/a |
| Mobile Voice Client 2050Nortel | See advisory | n/a |
Timeline
Publicly disclosed
Aug 18, 2004
Added to Industry KEV feed
Nov 9, 2004
Last updated
Apr 15, 2026
References
- advisory20040818 What A Drag II XP SP2
- patchVU#526089
- patch10973
- patchTA04-293A
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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 "…
Affected: Ip600 Media Servers (Avaya); Ie (Microsoft) versions 6.0-sp1, 6.0-sp2; Internet Explorer (Microsoft) versions 5.0.1, 5.0.1-sp1, 5.0.1-sp2, 5.0.1-sp3, 5.0.1-sp4, 5.5, 5.5-sp1, 5.5-sp2, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Nov 9, 2004.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2004-0839 On Your Attack Surface?
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