CVE-2006-3899

Microsoft Internet Explorer 6.0 - Denial of Service via CEnroll ActiveX stringToBinary Function

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2006-3899. PoCs published by hdm.

AI-analyzed exploit summary This exploit leverages a denial-of-service vulnerability in Microsoft Internet Explorer by using the ActiveXObject 'CEnroll.CEnroll.2' to trigger a buffer overflow via an excessively long string. The PoC crashes the application by exploiting improper bounds-checking in the 'stringToBinary' method.

Description

Microsoft Internet Explorer 6.0 on Windows XP SP2 allows remote attackers to cause a denial of service (application crash) by calling the stringToBinary function of the CEnroll.CEnroll.2 ActiveX object with a long second argument, which triggers an invalid memory access inside the SysAllocStringLen function.

Exploits (1)

exploitdb WORKING POC VERIFIED
by hdm · textdoswindows
https://www.exploit-db.com/exploits/28252

This exploit leverages a denial-of-service vulnerability in Microsoft Internet Explorer by using the ActiveXObject 'CEnroll.CEnroll.2' to trigger a buffer overflow via an excessively long string. The PoC crashes the application by exploiting improper bounds-checking in the 'stringToBinary' method.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Internet Explorer (versions affected by CVE-2006-3899)
No auth needed
Prerequisites: ActiveX enabled in Internet Explorer · User interaction to execute the script
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Exploit, Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/19102
Not Applicable vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/2916
Broken Link vdb-entry x_refsource_osvdb
http://www.osvdb.org/27230
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/27884

Scores

EPSS 0.2370
EPSS Percentile 97.5%

Details

Status published
Products (1)
microsoft/internet_explorer 6.0 (3 CPE variants)
Published Jul 27, 2006
Tracked Since Feb 18, 2026