CVEs / CVE-2022-21882
CVE-2022-21882: Microsoft Win32k Privilege Escalation Vulnerability
- Known exploited in the CISA KEV catalog since 4 Feb 2022
- high 7.8 CVSS 3.1 (NVD)
- EPSS 59.2% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.
Check your servers with Stackurity Already using Stackurity? Search for CVE-2022-21882
Summary
Microsoft Win32k contains an unspecified vulnerability that allows for privilege escalation.
Description
Win32k Elevation of Privilege Vulnerability
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1809 | from 10.0.17763.0, before 10.0.17763.2452 | 10.0.17763.2452 |
| Microsoft Windows 10 Version 1809 | from 10.0.0, before 10.0.17763.2452 | 10.0.17763.2452 |
| Microsoft Windows Server 2019 | from 10.0.17763.0, before 10.0.17763.2452 | 10.0.17763.2452 |
| Microsoft Windows Server 2019 (Server Core installation) | from 10.0.17763.0, before 10.0.17763.2452 | 10.0.17763.2452 |
| Microsoft Windows 10 Version 1909 | from 10.0.0, before 10.0.18363.2037 | 10.0.18363.2037 |
| Microsoft Windows 10 Version 21H1 | from 10.0.0, before 10.0.19043.1466 | 10.0.19043.1466 |
| Microsoft Windows Server 2022 | from 10.0.20348.0, before 10.0.20348.469 | 10.0.20348.469 |
| Microsoft Windows 10 Version 20H2 | from 10.0.0, before 10.0.19042.1466 | 10.0.19042.1466 |
| Microsoft Windows Server version 20H2 | from 10.0.0, before 10.0.19042.1466 | 10.0.19042.1466 |
| Microsoft Windows 11 version 21H2 | from 10.0.0, before 10.0.22000.434 | 10.0.22000.434 |
| Microsoft Windows 10 Version 21H2 | from 10.0.19043.0, before 10.0.19044.1466 | 10.0.19044.1466 |
Exploitation
| In CISA KEV since | 4 Feb 2022 |
|---|---|
| Due date for US federal agencies | 18 Feb 2022 |
| Used in ransomware campaigns | Known |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-787 |
References
- CVE-2022-21882 on NVD
- CVE-2022-21882 in the CISA KEV catalog
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21882 Patch, Vendor Advisory
- http://packetstormsecurity.com/files/166169/Win32k-ConsoleControl-Offset-Confusion-Privilege-Escalation.html Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21882 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21882 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.