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CVE-2020-0968

Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

  • High 7.5
  • Exploited: added to CISA KEV 3 Nov 2021
  • Used in ransomware campaigns

Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2020-0970.

Key facts

Published
15 Apr 2020
Last changed
21 Oct 2025
Assigned by
microsoft
KEV added
3 Nov 2021
KEV fix due
3 May 2022
Used in ransomware
Yes, according to CISA
EPSS
30.676% likely to be exploited in the next 30 days, higher than 98.274% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.5CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

What to do

  • Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
MicrosoftInternet Explorer 9
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (affected)
  • Windows Server 2008 for x64-based Systems Service Pack 2 (affected)
MicrosoftInternet Explorer 11
  • Windows 10 Version 1803 for 32-bit Systems (affected)
  • Windows 10 Version 1803 for x64-based Systems (affected)
  • Windows 10 Version 1803 for ARM64-based Systems (affected)
  • Windows 10 Version 1809 for 32-bit Systems (affected)
  • Windows 10 Version 1809 for x64-based Systems (affected)
  • Windows 10 Version 1809 for ARM64-based Systems (affected)
  • Windows Server 2019 (affected)
  • Windows 10 Version 1709 for 32-bit Systems (affected)
  • Windows 10 Version 1709 for x64-based Systems (affected)
  • Windows 10 Version 1709 for ARM64-based Systems (affected)
  • Windows 10 for 32-bit Systems (affected)
  • Windows 10 for x64-based Systems (affected)
  • Windows 10 Version 1607 for 32-bit Systems (affected)
  • Windows 10 Version 1607 for x64-based Systems (affected)
  • Windows Server 2016 (affected)
  • Windows 7 for 32-bit Systems Service Pack 1 (affected)
  • Windows 7 for x64-based Systems Service Pack 1 (affected)
  • Windows 8.1 for 32-bit systems (affected)
  • Windows 8.1 for x64-based systems (affected)
  • Windows RT 8.1 (affected)
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (affected)
  • Windows Server 2012 R2 (affected)
MicrosoftInternet Explorer 11 on Windows 10 Version 1909 for 32-bit Systems
  • unspecified (affected)
MicrosoftInternet Explorer 11 on Windows 10 Version 1909 for x64-based Systems
  • unspecified (affected)
MicrosoftInternet Explorer 11 on Windows 10 Version 1909 for ARM64-based Systems
  • unspecified (affected)
MicrosoftInternet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems
  • unspecified (affected)
MicrosoftInternet Explorer 11 on Windows 10 Version 1903 for x64-based Systems
  • unspecified (affected)
MicrosoftInternet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems
  • unspecified (affected)
MicrosoftInternet Explorer 11 on Windows Server 2012
  • unspecified (affected)

Timeline

  1. 15 Apr 2020 Published
  2. 3 Nov 2021 CVE-2020-0968 added to CISA KEV
  3. 3 Nov 2021 Added to the CISA KEV catalogue

Weakness

References