Microsoft Windows NT 4.0 SP2 Password Complexity passfilt.dll improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Microsoft Windows NT 4.0 SP2. This affects an unknown part in the library passfilt.dll of the component Password Complexity Handler. Executing a manipulation can lead to improper authentication. This vulnerability is registered as CVE-1999-1316. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Microsoft Windows NT 4.0 SP2 (Operating System) and classified as critical. This vulnerability affects an unknown code block in the library passfilt.dll of the component Password Complexity Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Passfilt.dll in Windows NT SP2 allows users to create a password that contains the user's name, which could make it easier for an attacker to guess.

The weakness was published 12/31/1999 as confirmed knowledge base article (Website). The advisory is shared for download at support.microsoft.com. This vulnerability was named CVE-1999-1316. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

Upgrading to version 2000 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (7391). Similar entries are available at VDB-15161 and VDB-15156. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Windows 2000

Timelineinfo

12/31/1999 🔍
12/31/1999 +0 days 🔍
06/23/2014 +5288 days 🔍
04/20/2026 +4319 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: support.microsoft.com
Status: Confirmed

CVE: CVE-1999-1316 (🔍)
GCVE (CVE): GCVE-0-1999-1316
GCVE (VulDB): GCVE-100-15160
X-Force: 7391 - Microsoft Windows NT strong passwords may allow parts of the full name

See also: 🔍

Entryinfo

Created: 06/23/2014 12:45
Updated: 04/20/2026 05:45
Changes: 06/23/2014 12:45 (43), 04/05/2019 11:21 (12), 04/20/2026 05:45 (17)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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