CVE-2004-1050
CriticalExploitedPublic exploitHeap-based buffer overflow in Internet Explorer 6 allows remote attackers to execute arbitrary code via long (1) SRC or (2) NAME attributes in IFRAME, FRAME, and EMBED elements, as originally discovered using the mangleme utility, aka "the IFRAME vulnerability" or the "HTML…
Published Dec 31, 2004 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2004-1050 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Ip600 Media Servers (Avaya), Ie (Microsoft), Internet Explorer (Microsoft) and 4 more products.
- It is exploited in the wild, listed in Industry KEV feed since Dec 1, 2004. Public exploit code is available.
- EPSS estimates a 67% 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.
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
67%
Higher than 99.2% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2004-1050 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Heap-based buffer overflow in Internet Explorer 6 allows remote attackers to execute arbitrary code via long (1) SRC or (2) NAME attributes in IFRAME, FRAME, and EMBED elements, as originally discovered using the mangleme utility, aka "the IFRAME vulnerability" or the "HTML Elements Vulnerability."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Dec 1, 2004 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
28 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Ip600 Media ServersAvaya | r10, r11, r12, r6, r7, r8, r9 | n/a |
| IeMicrosoft | 6.0-sp1 | n/a |
| Internet ExplorerMicrosoft | 6.0 | n/a |
| Definity One Media ServerAvaya | r10, r11, r12, r6, r7, r8, r9 | n/a |
| S3400Avaya | See advisory | n/a |
Timeline
Added to Industry KEV feed
Dec 1, 2004
Publicly disclosed
Dec 31, 2004
Last updated
Apr 15, 2026
References
- advisoryVU#842160
- exploitVulnCheck exploitation report
- exploitExploitDB-612
- other20041023 python does mangleme (with IE bugs!)
- other20041025 python does mangleme (with IE bugs!)
FAQ
Common Questions.
Heap-based buffer overflow in Internet Explorer 6 allows remote attackers to execute arbitrary code via long (1) SRC or (2) NAME attributes in IFRAME, FRAME, and EMBED elements, as originally discovered using the mangleme utility, aka "the IFRAME vulnerability" or the "HTML Elements Vulnerability."
Affected: Ip600 Media Servers (Avaya) versions r10, r11, r12, r6, r7, r8, r9; Ie (Microsoft) versions 6.0-sp1; Internet Explorer (Microsoft) versions 6.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Dec 1, 2004.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
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-2004-1050 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo