All vulnerabilities
CVE-2018-8174

Microsoft Windows VBScript Engine Out-of-Bounds Write Vulnerability

Microsoft WindowsOperating systems
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationExploited in the wildAdded to KEV 15 Feb 2022. Known ransomware useCISA KEV
Exploit odds (EPSS)88.2%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline15 Aug 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 9 May 2018, 19:00 UTCPublishedCVE List
  2. 21 May 2018Exploit code publicExploit-DB
  3. 15 Feb 2022Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Local exploitMicrosoft Internet Explorer 11 (Windows 7 x86/x64) - vbscript Code Execution 21 May 2018Exploit-DB

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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

Text from CVE List

Affected versions 28

  • Windows 7affected: 32-bit Systems Service Pack 1CVE List
  • Windows 7affected: x64-based Systems Service Pack 1CVE List
  • Windows Server 2012 R2affected: (Server Core installation)CVE List
  • Windows RT 8.1affected: Windows RT 8.1CVE List
  • Windows Server 2008affected: 32-bit Systems Service Pack 2CVE List
  • Windows Server 2008affected: 32-bit Systems Service Pack 2 (Server Core installation)CVE List
  • Windows Server 2008affected: Itanium-Based Systems Service Pack 2CVE List
  • Windows Server 2008affected: x64-based Systems Service Pack 2CVE List
  • Windows Server 2008affected: x64-based Systems Service Pack 2 (Server Core installation)CVE List
  • Windows Server 2012affected: (Server Core installation)CVE List
  • Windows 8.1affected: 32-bit systemsCVE List
  • Windows 8.1affected: x64-based systemsCVE List
  • Windows Server 2016affected: (Server Core installation)CVE List
  • Windows Server 2008 R2affected: Itanium-Based Systems Service Pack 1CVE List
  • Windows Server 2008 R2affected: x64-based Systems Service Pack 1CVE List
  • Windows Server 2008 R2affected: x64-based Systems Service Pack 1 (Server Core installation)CVE List
  • Windows 10affected: 32-bit SystemsCVE List
  • Windows 10affected: Version 1607 for 32-bit SystemsCVE List
  • Windows 10affected: Version 1607 for x64-based SystemsCVE List
  • Windows 10affected: Version 1703 for 32-bit SystemsCVE List
  • Windows 10affected: Version 1703 for x64-based SystemsCVE List
  • Windows 10affected: Version 1709 for 32-bit SystemsCVE List
  • Windows 10affected: Version 1709 for x64-based SystemsCVE List
  • Windows 10affected: Version 1803 for 32-bit SystemsCVE List
  • Windows 10affected: Version 1803 for x64-based SystemsCVE List
  • Windows 10affected: x64-based SystemsCVE List
  • Windows 10 Serversaffected: version 1709 (Server Core Installation)CVE List
  • Windows 10 Serversaffected: version 1803 (Server Core Installation)CVE List

References 5