CVE-2020-1380VulnerabilityPublished 11/03/2021Updated 10/24/2026

CVE-2020-1380: 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
EPSS: 24.2% chance of exploitation in 30 days – higher than 97% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-1380 (opens in a new tab)

Description

Microsoft Internet Explorer contains a memory corruption vulnerability that allows remote code execution in the context of the current user. This vulnerability has been exploited in the wild. No specific affected versions or patch information are provided in the available data.

Summary

CVE-2020-1380 is a memory corruption vulnerability in the Microsoft Internet Explorer scripting engine. Successful exploitation enables remote code execution with the privileges of the current user. The vulnerability has been observed in active exploitation campaigns. No detailed version or patch information is provided in the source data.

Impact

An attacker who successfully exploits this vulnerability can execute arbitrary code remotely with the same privileges as the current user, potentially leading to full compromise of the affected system depending on user rights. The vulnerability has been exploited in the wild, indicating active threat.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or workaround information is provided in the available data.

Weaknesses

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

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 09:11:25 UTC

Weaknesses

References

Related threats