CVE-2006-5177

MailEnable Professional/E 2.0 - RCE/DoS

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2006-5177. PoCs published by mu-b.

AI-analyzed exploit summary This exploit targets MailEnable Professional/Enterprise versions <= 2.35 by sending malformed NTLM authentication requests to the IMAP service, causing an out-of-bounds read that results in a denial-of-service (DoS). The PoC connects to the target IMAP port (143) and sends crafted base64-encoded payloads to trigger the vulnerability.

Description

The NTLM authentication in MailEnable Professional 2.0 and Enterprise 2.0 allows remote attackers to (1) execute arbitrary code via unspecified vectors involving crafted base64 encoded NTLM Type 3 messages, or (2) cause a denial of service via crafted base64 encoded NTLM Type 1 messages, which trigger a buffer over-read.

Exploits (1)

exploitdb WORKING POC VERIFIED
by mu-b · perldoswindows
https://www.exploit-db.com/exploits/28735

This exploit targets MailEnable Professional/Enterprise versions <= 2.35 by sending malformed NTLM authentication requests to the IMAP service, causing an out-of-bounds read that results in a denial-of-service (DoS). The PoC connects to the target IMAP port (143) and sends crafted base64-encoded payloads to trigger the vulnerability.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: MailEnable Professional/Enterprise <= 2.35
No auth needed
Prerequisites: Network access to the target IMAP service (port 143)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (7)

Core 7
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/29287
Patch, Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/22179
Patch x_refsource_confirm
http://www.mailenable.com/hotfix/
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/29286
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/20290
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/3862
Patch, Vendor Advisory x_refsource_misc
http://labs.musecurity.com/advisories/MU-200609-01.txt

Scores

EPSS 0.0706
EPSS Percentile 93.4%

Details

CWE
CWE-119
Status published
Products (2)
mailenable/mailenable_enterprise 2.0
mailenable/mailenable_professional 2.0
Published Oct 10, 2006
Tracked Since Feb 18, 2026