CVE-2021-1732

CVE Enrichment

CVSS: 7.8 HIGH
EPSS: 78.38%
EPSS Percentile: 99.58%
CISA KEV: YES — Known Exploited Vulnerability

Description

Windows Win32k Elevation of Privilege Vulnerability

Technical Details

CVSS Version: 3.1
CNA / NVD Source: secure@microsoft.com
Published: 26-Feb-2021 06:15
Last Modified: 12-Aug-2026 12:17
EPSS Date: 2026-10-20
CWE: CWE-787

CVSS Vector


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

CISA KEV Details

Date Added: 2021-11-03
Remediation Due: 2021-11-17
Known Ransomware Campaign Use: Known
Required Action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-1732

Affected Products / Versions

microsoft / windows_10_1803
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:*:*
microsoft / windows_10_1809
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:*:*
microsoft / windows_10_1909
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:*:*
microsoft / windows_10_2004
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_2004:-:*:*:*:*:*:*:*
microsoft / windows_10_20h2
Version / affected range: -
cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:*:*
microsoft / windows_server_1909
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*
microsoft / windows_server_2004
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_2004:-:*:*:*:*:*:*:*
microsoft / windows_server_2019
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
microsoft / windows_server_20h2
Version / affected range: -
cpe:2.3:o:microsoft:windows_server_20h2:-:*:*:*:*:*:*:*

References

Last enrichment sync: 21-Oct-2026 16:07
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE-2021-1732 BDU:2025-01331 Kaspersky 2026 Report Highlights Exploited Applications, Trusted Access and SOC Detection Gaps

CVE (11)

Malware (10)

MITRE ATT&CK (15)

Vendors (5)

Products (11)

Tools (10)

Industries (10)

Countries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.