VDB-16433 · CVE-2001-0104 · XFDB 5763

Alt-N MDaemon 3.5.1 Lock Server improper authentication

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Alt-N MDaemon 3.5.1. Affected is an unknown function of the component Lock Server Handler. The manipulation leads to improper authentication. This vulnerability is listed as CVE-2001-0104. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Alt-N MDaemon 3.5.1 (Mail Server Software). It has been rated as critical. This issue affects an unknown code of the component Lock Server Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

MDaemon Pro 3.5.1 and earlier allows local users to bypass the "lock server" security setting by pressing the Cancel button at the password prompt, then pressing the enter key.

The weakness was presented 02/12/2001 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2001-0104. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 74026 (Alt-N MDaemon Lock Server Bypass Vulnerabiltiy).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (5763), SecurityFocus (BID 2115†) and Vulnerability Center (SBV-3743†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Mail Server Software

Vendor

Alt-N

Name

MDaemon

Version

3.5.1

License

free

Website

Vendor: https://www.altn.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/14/2000 🔍
12/14/2000 +0 days 🔍
02/12/2001 +60 days 🔍
02/12/2001 +0 days 🔍
02/15/2004 +1098 days 🔍
07/03/2014 +3791 days 🔍
10/08/2025 +4115 days 🔍

Sourcesinfo

Vendor: altn.com

Advisory: securityfocus.com⛔
Status: Confirmed

CVE: CVE-2001-0104 (🔍)
GCVE (CVE): GCVE-0-2001-0104
GCVE (VulDB): GCVE-100-16433
X-Force: 5763
SecurityFocus: 2115 - Alt-N MDaemon 'Lock Server' Bypass Vulnerabiltiy
Vulnerability Center: 3743 - MDaemon Pro 3.5.1 Allows Security Bypass, High

Entryinfo

Created: 07/03/2014 11:47
Updated: 10/08/2025 10:23
Changes: 07/03/2014 11:47 (57), 05/19/2019 21:03 (2), 10/08/2025 10:23 (20)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.