Microsoft Windows NT 4.0/2000 cmd.exe Environment Variable memory corruption

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

Summaryinfo

A vulnerability was found in Microsoft Windows NT 4.0/2000. It has been classified as critical. This impacts an unknown function of the file cmd.exe. This manipulation as part of Environment Variable causes memory corruption. This vulnerability is registered as CVE-2000-0331. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Microsoft Windows NT 4.0/2000 (Operating System) and classified as critical. Affected by this vulnerability is an unknown code block of the file cmd.exe. The manipulation as part of a Environment Variable leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in Microsoft command processor (CMD.EXE) for Windows NT and Windows 2000 allows a local user to cause a denial of service via a long environment variable, aka the "Malformed Environment Variable" vulnerability.

The weakness was published 04/20/2000 by David Litchfield with Microsoft as not defined posting (Bugtraq). It is possible to read the advisory at archives.neohapsis.com. This vulnerability is known as CVE-2000-0331. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (4337), SecurityFocus (BID 1135†) and Vulnerability Center (SBV-786†). Similar entry is available at VDB-15474. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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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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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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

04/20/2000 🔍
04/20/2000 +0 days 🔍
04/20/2000 +0 days 🔍
04/20/2000 +0 days 🔍
02/03/2003 +1019 days 🔍
06/24/2014 +4159 days 🔍
04/21/2026 +4319 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: archives.neohapsis.com
Researcher: David Litchfield
Organization: Microsoft
Status: Confirmed

CVE: CVE-2000-0331 (🔍)
GCVE (CVE): GCVE-0-2000-0331
GCVE (VulDB): GCVE-100-15475
X-Force: 4337
SecurityFocus: 1135 - Windows NT 4.0 / 2000 cmd.exe Buffer Overflow Vulnerability
Vulnerability Center: 786 - [MS00-027] Windows NT 4.0 / 2000 cmd.exe Buffer Overflow Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 06/24/2014 11:48
Updated: 04/21/2026 05:09
Changes: 06/24/2014 11:48 (43), 05/08/2019 17:53 (20), 04/21/2026 05:09 (18)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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