EIP-2026-115619

PRE-CVE

Mercur MailServer 5.0 SP3 - 'IMAP' Denial of Service

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-115619. PoCs published by Omni.

AI-analyzed exploit summary This exploit demonstrates a stack-based buffer overflow in Mercur Messaging 2005 IMAP server via overly long arguments to the LOGIN and SELECT commands. It sends a crafted buffer of 280 'A' characters to trigger a DoS condition.

Description

Mercur MailServer 5.0 SP3 - 'IMAP' Denial of Service

Exploits (1)

exploitdb WORKING POC VERIFIED
by Omni · cdoswindows
https://www.exploit-db.com/exploits/1593

This exploit demonstrates a stack-based buffer overflow in Mercur Messaging 2005 IMAP server via overly long arguments to the LOGIN and SELECT commands. It sends a crafted buffer of 280 'A' characters to trigger a DoS condition.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Mercur Messaging 2005 IMAP 5.0 SP3
No auth needed
Prerequisites: Network access to the IMAP server (port 143)
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026