Microsoft Java Virtual Machine Sandbox config

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 identified as critical has been detected in Microsoft Java Virtual Machine. Affected by this vulnerability is an unknown functionality of the component Sandbox. This manipulation causes config. This vulnerability is registered as CVE-1999-0766. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Microsoft Java Virtual Machine (Programming Language Software) (affected version not known). Affected by this vulnerability is some unknown functionality of the component Sandbox. The manipulation with an unknown input leads to a config vulnerability. The CWE definition for the vulnerability is CWE-16. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Microsoft Java Virtual Machine allows a malicious Java applet to execute arbitrary commands outside of the sandbox environment.

The weakness was published 10/21/1999 with Microsoft as MS99-031 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. This vulnerability is known as CVE-1999-0766. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/19/2026). MITRE ATT&CK project uses the attack technique T1592.004 for this issue.

Upgrading eliminates this vulnerability. Applying the patch MS99-031 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (3378), SecurityFocus (BID 600†) and Vulnerability Center (SBV-4224†). Similar entry is available at VDB-14907. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

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: Config
CWE: CWE-16
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: 🔍

Patch: MS99-031

Timelineinfo

08/25/1999 🔍
10/21/1999 +57 days 🔍
10/21/1999 +0 days 🔍
10/21/1999 +0 days 🔍
04/29/2004 +1652 days 🔍
06/22/2014 +3706 days 🔍
04/19/2026 +4319 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS99-031
Organization: Microsoft
Status: Confirmed

CVE: CVE-1999-0766 (🔍)
GCVE (CVE): GCVE-0-1999-0766
GCVE (VulDB): GCVE-100-14905
X-Force: 3378
SecurityFocus: 600 - Microsoft IE Virtual Machine Sandbox Vulnerability
Vulnerability Center: 4224 - [MS99-031] Microsoft Java Virtual Machine Allows Java Applet Command Execution, Medium

See also: 🔍

Entryinfo

Created: 06/22/2014 13:54
Updated: 04/19/2026 15:42
Changes: 06/22/2014 13:54 (43), 05/21/2019 11:51 (20), 04/19/2026 15:42 (16)
Complete: 🔍
Cache ID: 216::103

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

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