CVE-2021-27085 - Vulnerability Details - OpenCVE

Internet Explorer Remote Code Execution Vulnerability

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact High

Availability Impact Low

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity High

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is in the KEV database since Nov. 3, 2021.

Exploitation active

Automatable no

Technical Impact partial

Vendors	Products
Microsoft	Internet Explorer Windows 10 1803 Windows 10 1809 Windows 10 1909 Windows 10 2004 Windows 10 20h2 Windows Server 2019

Configuration 1 [-]

AND

cpe:2.3:a:microsoft:internet_explorer:11:-:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_10_1803:-:::::::*
	cpe:2.3:o:microsoft:windows_10_1809:-:::::::*
	cpe:2.3:o:microsoft:windows_10_1909:-:::::::*
	cpe:2.3:o:microsoft:windows_10_2004:-:::::::*
	cpe:2.3:o:microsoft:windows_10_20h2:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2019:-:::::::*

No data.

References

Link	Providers
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27085
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27085

History

Wed, 22 Oct 2025 00:15:00 +0000

Type	Values Removed	Values Added
References		https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27085

Tue, 21 Oct 2025 20:30:00 +0000

Type	Values Removed	Values Added
References	https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27085

Tue, 21 Oct 2025 19:30:00 +0000

Type	Values Removed	Values Added
References		https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27085

Tue, 04 Feb 2025 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		kev `{'dateAdded': '2021-11-03'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2021-03-11T15:46:59.000Z

Updated: 2025-10-21T23:25:52.044Z

Reserved: 2021-02-10T00:00:00.000Z

Link: CVE-2021-27085

Vulnrichment

Updated: 2024-08-03T20:40:47.045Z

NVD

Status : Analyzed

Published: 2021-03-11T16:15:18.677

Modified: 2025-10-30T19:55:31.993

Link: CVE-2021-27085

Redhat

No data.

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