CVE-2021-40450 KEV
7.8
HIGH · CVSS 3.1 · EPSS 1.6% (pctl 75)
Patch first
On CISA KEV — known exploited in the wild, due 2022-05-16.
Description
Win32k Elevation of Privilege Vulnerability
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 1.58% — more likely to be exploited than 75% of all CVEs |
| On CISA KEV | yes — remediate by 2022-05-16 |
| Public exploit | none known |
| Published | 2021-10-13 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Microsoft Win32k Privilege Escalation Vulnerability |
|---|---|
| Added | 2022-04-25 |
| Due | 2022-05-16 |
| Vendor / product | Microsoft / Win32k |
| Ransomware use | none reported |
Affected (10)
| Vendor | Product |
|---|---|
| microsoft | windows 10 1809 |
| microsoft | windows 10 1909 |
| microsoft | windows 10 2004 |
| microsoft | windows 10 20h2 |
| microsoft | windows 10 21h1 |
| microsoft | windows 11 21h2 |
| microsoft | windows server 2004 |
| microsoft | windows server 2019 |
| microsoft | windows server 2022 |
| microsoft | windows server 20h2 |
References
→ the Explorer · watch your stack · NVD