Microsoft Windows NT 4.0/2000 Password Authentication improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Microsoft Windows NT 4.0/2000. This affects an unknown part of the component Password Authentication. The manipulation results in improper authentication. This vulnerability was named CVE-1999-0503. The attack needs to be approached locally. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Windows NT 4.0/2000 (Operating System). Affected is an unknown function of the component Password Authentication. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

a windows nt local user or administrator account has a guessable password.

The weakness was presented 01/01/1997. This vulnerability is traded as CVE-1999-0503. The exploitability is told to be easy. Local access is required to approach this attack. The successful exploitation requires a authentication. The technical details are unknown and an exploit is not available.

Upgrading to version Server 2003 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (1340) and Vulnerability Center (SBV-4296†). See VDB-13821, VDB-13819, VDB-13817 and VDB-13816 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Saint ID: exploit_info/smb_login
Saint Name: Windows password weakness

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Windows Server 2003
ISS Proventia IPS: 🔍

Timelineinfo

01/01/1997 🔍
01/01/1997 +0 days 🔍
01/01/1999 +730 days 🔍
05/17/2004 +1963 days 🔍
06/17/2014 +3683 days 🔍
04/16/2026 +4321 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Status: Confirmed

CVE: CVE-1999-0503 (🔍)
GCVE (CVE): GCVE-0-1999-0503
GCVE (VulDB): GCVE-100-13818
X-Force: 1340
Vulnerability Center: 4296 - A Windows NT Local User Account With Guessable Password, Low

See also: 🔍

Entryinfo

Created: 06/18/2014 00:13
Updated: 04/16/2026 13:24
Changes: 06/18/2014 00:13 (39), 04/07/2017 16:02 (20), 04/16/2026 13:24 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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