VDB-8631 · OSVDB 93081

Microsoft Security Essentials up to 4.1 Registry memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical has been found in Microsoft Security Essentials up to 4.1. This affects the function HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\Microsoft Security Client of the component Registry. The manipulation of the argument "UninstallString"="C:\\Program Files\\Microsoft Security Client\\Setup.exe /X" with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 05/04/2013 by Stefan Kanthak as not defined mailinglist post (Bugtraq). It is possible to read the advisory at seclists.org. The public release was coordinated with Microsoft. The exploitability is told to be difficult. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k.

Upgrading to version 4.2 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.




CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.4

VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍



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


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Security Essentials 4.2


02/13/2013 🔍
05/04/2013 +80 days 🔍
05/04/2013 +0 days 🔍
05/13/2013 +9 days 🔍
03/20/2019 +2137 days 🔍


Vendor: https://www.microsoft.com/

Advisory: seclists.org
Researcher: Stefan Kanthak
Status: Not defined
Coordinated: 🔍
OSVDB: 93081


Created: 05/13/2013 04:41 PM
Updated: 03/20/2019 08:38 PM
Changes: (1) vulnerability_cwe
Complete: 🔍


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