EIP-2026-116718

PRE-CVE

ActiveFax (ActFax) 4.3 - Client Importer Buffer Overflow (Metasploit)

Title source: legacy

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-116718. PoCs published by Metasploit.

AI-analyzed exploit summary This Metasploit module exploits a stack-based buffer overflow in ActiveFax Server 4.32 via a maliciously crafted .exp file imported through the 'Import Users from File' function. It uses an egghunter and alpha encoder to achieve remote code execution.

Description

ActiveFax (ActFax) 4.3 - Client Importer Buffer Overflow (Metasploit)

Exploits (1)

exploitdb WORKING POC VERIFIED

by Metasploit · rubylocalwindows

https://www.exploit-db.com/exploits/21139

View Code ZIP pw:eip

This Metasploit module exploits a stack-based buffer overflow in ActiveFax Server 4.32 via a maliciously crafted .exp file imported through the 'Import Users from File' function. It uses an egghunter and alpha encoder to achieve remote code execution.

Classification

Working Poc 95%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: ActiveFax Server 4.32

No auth needed

Prerequisites: Access to import a file into ActiveFax Server · Default character set 'ECMA-94 / Latin 1 (ISO 8859)' must be used

MITRE ATT&CK

T1203 - Exploitation for Client Execution T1059 - Command and Scripting Interpreter

devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve

Tracked Since Feb 18, 2026