EIP-2026-104082

PRE-CVE

Softek MailMarshal 4 / Trend Micro ScanMail 1.0 - SMTP Attachment Protection Bypass

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-104082. PoCs published by Aidan O'Kelly.

AI-analyzed exploit summary This Perl script exploits a vulnerability in SMTP gateways by manipulating filename extensions with illegal characters, bypassing attachment restrictions. It sends a malicious attachment with a modified extension that Outlook normalizes, delivering an executable file to the recipient.

Description

Softek MailMarshal 4 / Trend Micro ScanMail 1.0 - SMTP Attachment Protection Bypass

Exploits (1)

exploitdb WORKING POC VERIFIED
by Aidan O'Kelly · perlremotemultiple
https://www.exploit-db.com/exploits/21029

This Perl script exploits a vulnerability in SMTP gateways by manipulating filename extensions with illegal characters, bypassing attachment restrictions. It sends a malicious attachment with a modified extension that Outlook normalizes, delivering an executable file to the recipient.

Classification
Working Poc 95%
Attack Type
Other
Complexity
Trivial
Reliability
Reliable
Target: MailMarshall, TrendMicro Scanmail, and potentially other SMTP gateways
No auth needed
Prerequisites: Access to an SMTP server · A malicious file to attach
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026