// For flags

CVE-2018-8174

Microsoft Windows VBScript Engine Out-of-Bounds Write Vulnerability

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

7
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

Existe una vulnerabilidad de ejecución remota de código debido a la forma en la que el motor VBScript gestiona los objetos en la memoria. Esto también se conoce como "Windows VBScript Engine Remote Code Execution Vulnerability". Esto afecta a Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10 y Windows 10 Servers.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows VBScript. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of Class_Terminate methods. By performing actions in VBScript, an attacker can invoke a method on a component at a time when it is unsafe to do so. An attacker can leverage this vulnerability to execute code under the context of the current process.

Microsoft Internet Explorer 11 on Windows 7 x64/x86 suffers from a vbscript code execution vulnerability.

A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution"

*Credits: Simon Zuckerbraun of Trend Micro Zero Day Initiative
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-03-14 CVE Reserved
  • 2018-05-09 CVE Published
  • 2018-05-23 First Exploit
  • 2022-02-15 Exploited in Wild
  • 2022-08-15 KEV Due Date
  • 2024-08-05 CVE Updated
  • 2024-08-12 EPSS Updated
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
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Windows 10
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--
Affected
Microsoft
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Windows 10
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1607
Search vendor "Microsoft" for product "Windows 10" and version "1607"
-
Affected
Microsoft
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Windows 10
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1703
Search vendor "Microsoft" for product "Windows 10" and version "1703"
-
Affected
Microsoft
Search vendor "Microsoft"
Windows 10
Search vendor "Microsoft" for product "Windows 10"
1709
Search vendor "Microsoft" for product "Windows 10" and version "1709"
-
Affected
Microsoft
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Windows 10
Search vendor "Microsoft" for product "Windows 10"
1803
Search vendor "Microsoft" for product "Windows 10" and version "1803"
-
Affected
Microsoft
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Windows 7
Search vendor "Microsoft" for product "Windows 7"
-sp1
Affected
Microsoft
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Windows 8.1
Search vendor "Microsoft" for product "Windows 8.1"
--
Affected
Microsoft
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Windows Rt 8.1
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--
Affected
Microsoft
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Windows Server 2008
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-sp2
Affected
Microsoft
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Windows Server 2008
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r2
Search vendor "Microsoft" for product "Windows Server 2008" and version "r2"
sp1, itanium
Affected
Microsoft
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Windows Server 2008
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r2
Search vendor "Microsoft" for product "Windows Server 2008" and version "r2"
sp1, x64
Affected
Microsoft
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Windows Server 2012
Search vendor "Microsoft" for product "Windows Server 2012"
--
Affected
Microsoft
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Windows Server 2012
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r2
Search vendor "Microsoft" for product "Windows Server 2012" and version "r2"
-
Affected
Microsoft
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Windows Server 2016
Search vendor "Microsoft" for product "Windows Server 2016"
--
Affected
Microsoft
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Windows Server 2016
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1709
Search vendor "Microsoft" for product "Windows Server 2016" and version "1709"
-
Affected
Microsoft
Search vendor "Microsoft"
Windows Server 2016
Search vendor "Microsoft" for product "Windows Server 2016"
1803
Search vendor "Microsoft" for product "Windows Server 2016" and version "1803"
-
Affected