CVEvulnerability

CVE-2021-28310

7.8 HIGH Known exploited Published 2021-04-13 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Win32k Privilege Escalation Vulnerability — Microsoft Win32k

Microsoft Windows Win32k contains an unspecified vulnerability that allows for privilege escalation.

Added to KEV
2021-11-03
Remediation due
2021-11-17
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-28310
Status
Analyzed
Published
2021-04-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-787

Description

Win32k Elevation of Privilege Vulnerability

Affected configurations

• microsoft windows 10 1803 • microsoft windows 10 1809 • microsoft windows 10 1909 • microsoft windows 10 2004 • microsoft windows 10 20h2 • microsoft windows server 1909 • microsoft windows server 2004 • microsoft windows server 2019 • microsoft windows server 20h2

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References