CVE-2002-0079

Internet Information Server 4.0 and 5.0 - Buffer Overflow in Chunked Encoding Transfer Mechanism

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 4 public exploits for CVE-2002-0079. PoCs published by yuange, hsj, NeMeS||y.

AI-analyzed exploit summary This exploit targets a heap overflow vulnerability in Microsoft IIS 4.0/5.0 via chunked encoding in ASP.dll. It includes shellcode to execute arbitrary commands, with configurable return addresses for different Windows versions.

Description

Buffer overflow in the chunked encoding transfer mechanism in Internet Information Server (IIS) 4.0 and 5.0 Active Server Pages allows attackers to cause a denial of service or execute arbitrary code.

Exploits (4)

exploitdb WORKING POC VERIFIED
by yuange · cremotewindows
https://www.exploit-db.com/exploits/21371

This exploit targets a heap overflow vulnerability in Microsoft IIS 4.0/5.0 via chunked encoding in ASP.dll. It includes shellcode to execute arbitrary commands, with configurable return addresses for different Windows versions.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: Microsoft IIS 4.0, 5.0
No auth needed
Prerequisites: Network access to vulnerable IIS server · ASP.dll loaded on target
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by hsj · cremotewindows
https://www.exploit-db.com/exploits/21369

This exploit targets a heap overflow in Microsoft IIS 4.0/5.0 via chunked encoding in ASP, allowing remote code execution. It crafts a malicious HTTP request with shellcode to spawn a reverse shell.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: Microsoft IIS 4.0, 5.0
No auth needed
Prerequisites: Network access to vulnerable IIS server · Default or exploitable ASP script (e.g., iisstart.asp)
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by NeMeS||y · cremotewindows
https://www.exploit-db.com/exploits/21370

This exploit targets a heap overflow vulnerability in Microsoft IIS 4.0 and 5.0 via chunked encoding transfer mechanism in Active Server Pages. It includes shellcode to achieve remote code execution (RCE) on vulnerable systems.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft IIS 4.0 and 5.0
No auth needed
Prerequisites: Network access to vulnerable IIS server · Chunked encoding enabled on the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by CHINANSL Security Team · cremotewindows
https://www.exploit-db.com/exploits/21368

This exploit targets a heap overflow in Microsoft IIS 4.0/5.0 via chunked encoding in ASP, allowing remote code execution. It sends a crafted POST request with shellcode to trigger the vulnerability and spawns a reverse shell on port 1111.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft IIS 4.0/5.0
No auth needed
Prerequisites: Network access to vulnerable IIS server · ASP enabled on the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (9)

Core 9
Core References
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A25
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/610291
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/4485
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=101846993304518&w=2
Third Party Advisory vdb-entry x_refsource_xf
http://www.iss.net/security_center/static/8795.php
US Government Resource third-party-advisory x_refsource_cert
http://www.cert.org/advisories/CA-2002-09.html

Scores

EPSS 0.7734
EPSS Percentile 99.5%

Details

Status published
Products (2)
microsoft/internet_information_server 4.0
microsoft/internet_information_services 5.0
Published Apr 22, 2002
Tracked Since Feb 18, 2026