CVE-2003-0113

Microsoft IE - Buffer Overflow

Title source: rule
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2003-0113. PoCs published by Jouko Pynnonen.

AI-analyzed exploit summary This Perl script exploits a buffer overflow in Microsoft Internet Explorer's URLMON.DLL by sending an overly long HTTP header. The vulnerability allows arbitrary code execution in the context of the client user.

Description

Buffer overflow in URLMON.DLL in Microsoft Internet Explorer 5.01, 5.5 and 6.0 allows remote attackers to execute arbitrary code via an HTTP response containing long values in (1) Content-type and (2) Content-encoding fields.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Jouko Pynnonen · perlremotewindows
https://www.exploit-db.com/exploits/22530

This Perl script exploits a buffer overflow in Microsoft Internet Explorer's URLMON.DLL by sending an overly long HTTP header. The vulnerability allows arbitrary code execution in the context of the client user.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Internet Explorer (versions affected by CVE-2003-0113)
No auth needed
Prerequisites: A vulnerable version of Microsoft Internet Explorer · A web server to host the malicious script
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=105718285107246&w=2
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A926
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=105138417416900&w=2
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/169753

Scores

EPSS 0.3937
EPSS Percentile 98.4%

Details

Status published
Products (4)
microsoft/ie 6.0 sp1
microsoft/internet_explorer 5.0.1 (4 CPE variants)
microsoft/internet_explorer 5.5 (3 CPE variants)
microsoft/internet_explorer 6.0
Published May 12, 2003
Tracked Since Feb 18, 2026