VDB-13825 · CVE-1999-0521 · XFDB 85

NIS Domain Name privileges management

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.
8.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in NIS. It has been rated as problematic. This impacts an unknown function of the component Domain Name Handler. This manipulation causes privileges management. This vulnerability is registered as CVE-1999-0521. No exploit is available. It is advisable to modify the configuration settings.

Detailsinfo

A vulnerability classified as critical was found in NIS (version unknown). Affected by this vulnerability is an unknown function of the component Domain Name Handler. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 01/01/1997. This vulnerability is known as CVE-1999-0521. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 66026 (Weak NIS Domain Name).

It is possible to mitigate the problem by applying the configuration setting .

The vulnerability is also documented in the databases at X-Force (85) and Vulnerability Center (SBV-495†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.2

VulDB Base Score: 8.4
VulDB Temp Score: 8.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
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: Config
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/01/1997 🔍
01/01/1997 +0 days 🔍
01/01/1997 +0 days 🔍
12/23/2002 +2182 days 🔍
06/17/2014 +4194 days 🔍
04/16/2026 +4321 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-1999-0521 (🔍)
GCVE (CVE): GCVE-0-1999-0521
GCVE (VulDB): GCVE-100-13825
X-Force: 85
Vulnerability Center: 495 - NIS Domain Name is Easily Guessable, Low

Entryinfo

Created: 06/18/2014 00:19
Updated: 04/16/2026 13:24
Changes: 06/18/2014 00:19 (50), 10/26/2025 00:26 (18), 04/16/2026 13:24 (1)
Complete: 🔍
Cache ID: 216::103

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