Windows Kernel
CVE-2021-1732 — Windows Win32k Elevation of Privilege Vulnerability
Executive Summary
None
Overview
7.8
CVSS HIGH
Important
MS Severity
Exploited
MS Exploit Status
Exploitation Detected
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Functional
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.2
EPSS Score
0.77762
probability of exploitation in the next 30 days
0.99528 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
19 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 1803 for 32-bit Systems | 4601354 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 1803 for ARM64-based Systems | 4601354 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 1803 for x64-based Systems | 4601354 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 4601345 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 4601345 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 1809 for x64-based Systems | 4601345 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 1909 for 32-bit Systems | 4601315 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 1909 for ARM64-based Systems | 4601315 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 1909 for x64-based Systems | 4601315 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 2004 for 32-bit Systems | 4601319 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 2004 for ARM64-based Systems | 4601319 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 2004 for x64-based Systems | 4601319 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 20H2 for 32-bit Systems | 4601319 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows 10 Version 20H2 for ARM64-based Systems | 4601319 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows Server 2019 | 4601345 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows Server 2019 (Server Core installation) | 4601345 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows Server, version 1909 (Server Core installation) | 4601315 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows Server, version 2004 (Server Core installation) | 4601319 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows Server, version 20H2 (Server Core Installation) | 4601319 (Security Update) |
Important | Elevation of Privilege | Yes |
Patches
4 patches
| Article | Type | Restart |
|---|---|---|
4601354 |
Security Update | Yes |
4601345 |
Security Update | Yes |
4601315 |
Security Update | Yes |
4601319 |
Security Update | Yes |
Exploits & PoC
13 public PoCsUnverified third-party code
Public proof-of-concept repositories aggregated from PoC-in-GitHub. They are not reviewed and may be incomplete, non-functional, or malicious — inspect the code before running anything.
| Repository | Stars | Published | Description |
|---|---|---|---|
| KaLendsi/CVE-2021-1732-Exploit | 426 | 2021-03-05 | CVE-2021-1732 Exploit |
| po4sec/CVE-2021-1732 | 66 | 2021-04-23 | CVE-2021-1732 poc & exp; tested on 20H2 |
| exploitblizzard/Windows-Privilege-Escalation-CVE-2021-1732 | 31 | 2021-04-25 | Read my blog for more info - |
| fenalik/CVE-2021-1732 | 15 | 2022-11-01 | CVE-2021-1732 Microsoft Windows 10 本地提权漏 研究及Poc/Exploit开发 |
| 4dp/CVE-2021-1732 | 4 | 2023-03-09 | CVE-2021-1732 Microsoft Windows 10 本地提权漏 研究及Poc/Exploit开发 |
| linuxdy/CVE-2021-1732_exp | 3 | 2021-04-02 | |
| oneoy/CVE-2021-1732-Exploit | 1 | 2021-03-09 | |
| BeneficialCode/CVE-2021-1732 | 1 | 2021-09-24 | |
| asepsaepdin/CVE-2021-1732 | 1 | 2023-07-11 | |
| flyinbedxyz/CVE-2021-1732 | 0 | 2021-03-08 | CVE-2021-1732 Microsoft Windows 10 本地提权漏 研究及Poc/Exploit开发 |
| ExploitCN/CVE-2021-1732-EXP- | 0 | 2022-01-23 | 对1909下windows版本的EXP进行分析，并对代码添加调试和注释 |
| r1l4-i3pur1l4/CVE-2021-1732 | 0 | 2022-02-15 | |
| yangshifan-git/CVE-2021-1732 | 0 | 2023-06-29 |
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
YanZiShuang( @madongze
JinQuan, MaDongZe, TuXiaoYi, and LiHao of DBAPPSecurity Co., Ltd
References
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