CVE-2020-0968VulnerabilityPublished 11/03/2021Updated 10/24/2026

CVE-2020-0968: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

Affects Microsoft Internet ExplorerSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 11/03/2021
KEV deadline: 05/03/2022
Ransomware: Used in ransomware campaigns
EPSS: 30.7% chance of exploitation in 30 days – higher than 98% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-0968 (opens in a new tab)

Description

CVE-2020-0968 is a memory corruption vulnerability in the Microsoft Internet Explorer Scripting Engine. It arises from improper handling of objects in memory, which can lead to remote code execution. This vulnerability has been exploited in the wild and is associated with known ransomware campaigns. It affects Internet Explorer but no specific affected versions are provided. The severity is high due to the potential for remote code execution.

Summary

Microsoft Internet Explorer contains a memory corruption vulnerability (CVE-2020-0968) in its Scripting Engine caused by improper handling of objects in memory. This flaw allows attackers to execute arbitrary code remotely. The vulnerability has been observed in active exploitation scenarios, including ransomware campaigns. No explicit affected versions or patch information is provided in the input data.

Impact

Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code on affected systems, potentially leading to full system compromise. It has been exploited in the wild and used in ransomware campaigns, indicating active threat and significant risk to affected users.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor Microsoft advisories for updates and apply any available security updates promptly. Until a fix is confirmed, consider restricting or disabling Internet Explorer usage where feasible.

Weaknesses

CWE-787Out-of-bounds Write (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 09:11:05 UTC

Weaknesses

References

Related threats