Microsoft Windows NT System Policy improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows NT. It has been rated as problematic. Impacted is an unknown function of the component System Policy Handler. The manipulation leads to improper authentication. This vulnerability is uniquely identified as CVE-1999-0987. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows NT (Operating System). This issue affects an unknown function of the component System Policy 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:

Windows NT does not properly download a system policy if the domain user logs into the domain with a space at the end of the domain name.

The weakness was disclosed 11/18/1999 as not defined knowledge base article (Website). It is possible to read the advisory at support.microsoft.com. The identification of this vulnerability is CVE-1999-0987. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

The entry VDB-14986 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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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: 🔍

Timelineinfo

11/18/1999 🔍
11/18/1999 +0 days 🔍
06/22/2014 +5330 days 🔍
04/19/2026 +4319 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: support.microsoft.com
Status: Confirmed

CVE: CVE-1999-0987 (🔍)
GCVE (CVE): GCVE-0-1999-0987
GCVE (VulDB): GCVE-100-14987
See also: 🔍

Entryinfo

Created: 06/22/2014 15:00
Updated: 04/19/2026 19:06
Changes: 06/22/2014 15:00 (40), 04/05/2019 08:06 (10), 04/19/2026 19:06 (18)
Complete: 🔍
Cache ID: 216::103

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