CVE-2000-0507

Imate Webmail Server 2.5 - Denial of Service via Long HELO Command

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2000-0507. PoCs published by Delphis Consulting.

AI-analyzed exploit summary This exploit demonstrates a denial-of-service (DoS) vulnerability in Concatus IMate Web Mail Server 2.5 by sending an oversized HELO command (1119+ characters) via SMTP, causing the server to crash.

Description

Imate Webmail Server 2.5 allows remote attackers to cause a denial of service via a long HELO command.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Delphis Consulting · textremotewindows
https://www.exploit-db.com/exploits/19976

This exploit demonstrates a denial-of-service (DoS) vulnerability in Concatus IMate Web Mail Server 2.5 by sending an oversized HELO command (1119+ characters) via SMTP, causing the server to crash.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Concatus IMate Web Mail Server 2.5
No auth needed
Prerequisites: Network access to the SMTP port (25) of the target server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=95990195708509&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/4586
Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/1286

Scores

EPSS 0.0728
EPSS Percentile 93.6%

Details

Status published
Products (1)
concatus/imate_webmail_server 2.5
Published Jun 01, 2000
Tracked Since Feb 18, 2026