CVE-2001-0643

Internet Explorer 5.5 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2001-0643. PoCs published by Georgi Guninski.

AI-analyzed exploit summary This exploit describes a flaw in Windows CLSID handling where appending a CLSID to a filename can alter the default action, potentially executing malicious files disguised as harmless ones (e.g., .jpg). The writeup references a GitLab link for a binary exploit but does not include executable code.

Description

Internet Explorer 5.5 does not display the Class ID (CLSID) when it is at the end of the file name, which could allow attackers to trick the user into executing dangerous programs by making it appear that the document is of a safe file type.

Exploits (1)

exploitdb WRITEUP VERIFIED
by Georgi Guninski · textremotewindows
https://www.exploit-db.com/exploits/20774

This exploit describes a flaw in Windows CLSID handling where appending a CLSID to a filename can alter the default action, potentially executing malicious files disguised as harmless ones (e.g., .jpg). The writeup references a GitLab link for a binary exploit but does not include executable code.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Windows (versions affected by CVE-2001-0643)
No auth needed
Prerequisites: User interaction to open the malicious file
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (7)

Core 7
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/6426
Various Sources x_refsource_misc
http://www.guninski.com/clsidext.html
Exploit, Patch, Vendor Advisory x_refsource_misc
http://vil.nai.com/vil/virusSummary.asp?virus_k=99048
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/2612
Exploit, Patch, Vendor Advisory mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/176909
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/7858

Scores

EPSS 0.1036
EPSS Percentile 95.1%

Details

Status published
Products (1)
microsoft/internet_explorer 5.5
Published Sep 20, 2001
Tracked Since Feb 18, 2026