| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.2 | $0-$5k | 0.00 |
Summary
A vulnerability classified as critical was found in Microsoft Windows NT 4.0/2000. Affected by this issue is some unknown functionality of the component User Group Handler. Such manipulation leads to privileges management. This vulnerability is listed as CVE-1999-0603. There is no available exploit. Modifying the configuration settings is advised.
Details
A vulnerability was found in Microsoft Windows NT 4.0/2000 (Operating System) and classified as critical. Affected by this issue is an unknown function of the component User Group Handler. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:
In Windows NT, an inappropriate user is a member of a group, e.g. Administrator, Backup Operators, Domain Admins, Domain Guests, Power Users, Print Operators, Replicators, System Operators, etc.
The weakness was presented 01/01/1999. This vulnerability is handled as CVE-1999-0603. The attack may be launched remotely. The successful exploitation requires a simple authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/18/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.
It is possible to mitigate the problem by applying the configuration setting .
The vulnerability is also documented in the databases at X-Force (3339) and Vulnerability Center (SBV-698†). See VDB-14379 for similar entry. If you want to get best quality of vulnerability data, you may have to visit VulDB.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.microsoft.com/
- Product: https://www.microsoft.com/en-us/windows
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 6.2
VulDB Base Score: 6.3
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| 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: 🔍
Exploiting
Class: Privileges managementCWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: ConfigStatus: 🔍
0-Day Time: 🔍
Timeline
01/01/1999 🔍01/01/1999 🔍
01/01/1999 🔍
01/22/2003 🔍
06/19/2014 🔍
04/18/2026 🔍
Sources
Vendor: microsoft.comProduct: microsoft.com
Status: Not defined
CVE: CVE-1999-0603 (🔍)
GCVE (CVE): GCVE-0-1999-0603
GCVE (VulDB): GCVE-100-14378
X-Force: 3339
Vulnerability Center: 698 - Microsoft Windows NT/2000 Inappropriate Membership of a User in a Certain Group, Critical
See also: 🔍
Entry
Created: 06/20/2014 01:17Updated: 04/18/2026 02:21
Changes: 06/20/2014 01:17 (38), 02/07/2019 12:14 (16), 04/18/2026 02:21 (16)
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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