EIP-2026-119563

PRE-CVE

3proxy 0.5.3g (Windows x86) - 'logurl()' Remote Buffer Overflow

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-119563. PoCs published by Marcin Kozlowski.

AI-analyzed exploit summary This Perl script exploits a stack-based buffer overflow in 3Proxy (versions prior to 0.5.3h and 0.6b-devel before 20070413) by sending a maliciously crafted HTTP GET request with an overly long Host header. The exploit includes a NOP sled and shellcode to execute arbitrary code (e.g., calc.exe) by overwriting the EIP with a 'call esp' instruction.

Description

3proxy 0.5.3g (Windows x86) - 'logurl()' Remote Buffer Overflow

Exploits (1)

exploitdb WORKING POC VERIFIED
by Marcin Kozlowski · perlremotewindows_x86
https://www.exploit-db.com/exploits/4754

This Perl script exploits a stack-based buffer overflow in 3Proxy (versions prior to 0.5.3h and 0.6b-devel before 20070413) by sending a maliciously crafted HTTP GET request with an overly long Host header. The exploit includes a NOP sled and shellcode to execute arbitrary code (e.g., calc.exe) by overwriting the EIP with a 'call esp' instruction.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: 3Proxy < 0.5.3h, 0.6b-devel < 20070413
No auth needed
Prerequisites: Network access to the target's 3Proxy service on port 3128
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026