CVE-2004-1636

WvTftp 0.9 - Remote Code Execution via Long TFTP Option String

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2004-1636. PoCs published by infamous41md.

AI-analyzed exploit summary This exploit targets a heap overflow vulnerability in wvtftp (CVE-2004-1636) by overwriting a pointer and hijacking the malloc() jumpslot to achieve remote code execution. It includes shellcode for a reverse shell and requires precise heap address calculations.

Description

Heap-based buffer overflow in the WvTFTPServer::new_connection function in wvtftpserver.cc for WvTftp 0.9 allows remote attackers to execute arbitrary code via a long option string in a TFTP packet.

Exploits (1)

exploitdb WORKING POC VERIFIED
by infamous41md · cremotelinux
https://www.exploit-db.com/exploits/608

This exploit targets a heap overflow vulnerability in wvtftp (CVE-2004-1636) by overwriting a pointer and hijacking the malloc() jumpslot to achieve remote code execution. It includes shellcode for a reverse shell and requires precise heap address calculations.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Racy
Target: wvtftp (likely versions before 2004 patch)
No auth needed
Prerequisites: Heap base address of target process · malloc() jumpslot address · Network access to vulnerable service
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=109885074513940&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/17869
Exploit, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/11525
Exploit, Patch, Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/12986

Scores

EPSS 0.0830
EPSS Percentile 94.2%

Details

Status published
Products (1)
net_integration_technologies_inc./wvtftp 0.9
Published Oct 26, 2004
Tracked Since Feb 18, 2026