CVE-2000-0239

MERCUR WebView WebMail Server - Denial of Service via Long mail_user Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2000-0239. PoCs published by Ussr Labs.

AI-analyzed exploit summary The exploit describes a buffer overflow vulnerability in WebView WebMail-Client when handling overly long GET requests on port 1080, leading to a denial-of-service (DoS) condition. The provided example demonstrates the crash via a malformed URL with a long string.

Description

Buffer overflow in the MERCUR WebView WebMail server allows remote attackers to cause a denial of service via a long mail_user parameter in the GET request.

Exploits (1)

exploitdb WRITEUP VERIFIED
by Ussr Labs · textdoswindows
https://www.exploit-db.com/exploits/19810

The exploit describes a buffer overflow vulnerability in WebView WebMail-Client when handling overly long GET requests on port 1080, leading to a denial-of-service (DoS) condition. The provided example demonstrates the crash via a malformed URL with a long string.

Classification
Writeup 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: WebView WebMail-Client (add-on for Mercur Mail Server)
No auth needed
Prerequisites: Network access to port 1080 on the target
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=95325335825295&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/1056
Various Sources x_refsource_misc
http://www.ussrback.com/labs36.html

Scores

EPSS 0.0356
EPSS Percentile 87.8%

Details

Status published
Products (3)
atrium_software/mercur_imap4_server 3.20.01
atrium_software/mercur_mailserver 3.2
atrium_software/mercur_pop3_server 3.20.01
Published Mar 15, 2000
Tracked Since Feb 18, 2026