CVE-2020-0968

Microsoft Internet Explorer: Scripting Engine Memory Corruption

As of , CVE-2020-0968 in Microsoft Internet Explorer is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 3 November 2021
US federal deadline
3 May 2022181 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
KnownCISA changed it from Unknown to Known on 14 August 2026.
EPSS score
0.31Higher than 98% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Microsoft Internet Explorer contains a memory corruption vulnerability due to how the Scripting Engine handles objects in memory, leading to remote code execution.

CISA's 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.

The CVE record's description, from microsoft

CVE published
15 April 2020
Assigned by
microsoft
CVSS
7.5 High (CVSS 3.1, from CISA-ADP)
CWE-787
Out-of-bounds Write
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.
  4. CISA changed its entry. Ransomware use: Unknown to Known.

Internet Explorer: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2010-0249Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.92; verified Exploit-DB entry0.92
CVE-2010-0806Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.82; verified Exploit-DB entry0.82
CVE-2010-3962Uninitialized Memory CorruptionMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.97; verified Exploit-DB entry0.97
CVE-2013-3893Resource Management ErrorsMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.88; verified Exploit-DB entry0.88
CVE-2012-4792Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.79; verified Exploit-DB entry0.79
CVE-2013-3163Memory CorruptionMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.71; verified Exploit-DB entry0.71
CVE-2012-4969Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.80; verified Exploit-DB entry0.80
CVE-2014-0322Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.85; verified Exploit-DB entry0.85
CVE-2013-2551Use-After-FreeMicrosoft Internet ExplorerPatch this weekRansomware use; Metasploit module; EPSS 0.74; verified Exploit-DB entry0.74
CVE-2013-1347Remote Code ExecutionMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.78; verified Exploit-DB entry0.78

All 36 entries for Internet Explorer

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