Actively exploited · Published Jan 11, 2022 · Assigned by microsoft
CVE-2022-21882Win32k Elevation of Privilege Vulnerability
High 7.0 Exploited Ransomware
In plain English
A high-severity out-of-bounds write in Windows 10 Version 1809 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on February 4, 2022). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 59.2% (higher than 99.1% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code. Apply updates per vendor instructions.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Feb 18, 2022.
Official description
Win32k Elevation of Privilege Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before 10.0.17763.2452 |
| Microsoft | Windows 10 Version 1809 | 10.0.0 – before 10.0.17763.2452 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.2452 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before 10.0.17763.2452 |
| Microsoft | Windows 10 Version 1909 | 10.0.0 – before 10.0.18363.2037 |
| Microsoft | Windows 10 Version 21H1 | 10.0.0 – before 10.0.19043.1466 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.469 |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 – before 10.0.19042.1466 |
| Microsoft | Windows Server version 20H2 | 10.0.0 – before 10.0.19042.1466 |
| Microsoft | Windows 11 version 21H2 | 10.0.0 – before 10.0.22000.434 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19043.0 – before 10.0.19044.1466 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Win32k Elevation of Privilege Vulnerability vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21882 x_refsource_MISC, x_transferred
- http://packetstormsecurity.com/files/166169/Win32k-ConsoleControl-Offset-Confusion-Privilege-Escalation.html x_refsource_MISC, x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21882 government-resource