CVE-1999-1557

Ipswitch IMail < 5.0 - Buffer Overflow via Long Username or Password

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-1557. PoCs published by Marc of eEye.

AI-analyzed exploit summary This exploit demonstrates a buffer overflow vulnerability in the imapd login process of IMail 4.06. By sending overly long strings (1200 and 1300 characters) as the username and password, the service crashes due to insufficient input validation.

Description

Buffer overflow in the login functions in IMAP server (imapd) in Ipswitch IMail 5.0 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via (1) a long user name or (2) a long password.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Marc of eEye · textdosmultiple
https://www.exploit-db.com/exploits/19377

This exploit demonstrates a buffer overflow vulnerability in the imapd login process of IMail 4.06. By sending overly long strings (1200 and 1300 characters) as the username and password, the service crashes due to insufficient input validation.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: IMail 4.06
No auth needed
Prerequisites: Network access to the target's IMAP port (143)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/1895
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=92038879607336&w=2

Scores

EPSS 0.0844
EPSS Percentile 94.3%

Details

Status published
Products (1)
ipswitch/imail < 5.0
Published May 02, 2005
Tracked Since Feb 18, 2026