CVE-2021-40444

HIGHCVSS 8.8Known Exploited

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CISA Known Exploited Vulnerability

https://nvd.nist.gov/vuln/detail/CVE-2021-40444

Remediation deadline: November 17, 2021

Ransomware use: Known

Description

Microsoft MSHTML contains a unspecified vulnerability that allows for remote code execution.

Timeline

Published:September 15th, 2021 12:15 PM

Last modified:August 10th, 2026 8:19 PM

Added to KEV:November 3rd, 2021

CVSS Scoring

CVSS v3: 8.8 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L

CVSS v2: 6.8

Affected Software

From NVD CPE configuration data

Vendors

microsoft

Products

windows_10_1507windows_10_1607windows_10_1809windows_10_1909windows_10_2004windows_10_20h2windows_10_21h1windows_7windows_8.1windows_rt_8.1windows_server_2004windows_server_2008windows_server_2012windows_server_2016windows_server_2019windows_server_2022windows_server_20h2

Weaknesses (CWE)

CWE-22

References & Reports

Advisories, patches, and third-party reports

Source: NIST NVD · Data may lag official sources by up to one minute