7.8
High
Exploited
· ransomware
CVE-2021-40449 Microsoft Windows Win32k Privilege Escalation Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Known to be used
Weakness
CWE-416
Description
Win32k Elevation of Privilege Vulnerability
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 Version 1809 10.0 | 10.0.0 → < 10.0.17763.2237 | 10.0.17763.2237 |
| Windows Server 2019 10.0 | 10.0.0 → < 10.0.17763.2237 | 10.0.17763.2237 |
| Windows Server 2019 (Server Core installation) 10.0 | 10.0.0 → < 10.0.17763.2237 | 10.0.17763.2237 |
| Windows 10 Version 1909 10.0 | 10.0.0 → < 10.0.18363.1854 | 10.0.18363.1854 |
| Windows 10 Version 21H1 10.0 | 10.0.0 → < 10.0.19041.1288 | 10.0.19041.1288 |
| Windows Server 2022 10.0 | 10.0.0 → < 10.0.20348.288 | 10.0.20348.288 |
| Windows 10 Version 2004 10.0 | 10.0.0 → < 10.0.19041.1288 | 10.0.19041.1288 |
| Windows Server version 2004 10.0 | 10.0.0 → < 10.0.19041.1288 | 10.0.19041.1288 |
| Windows 10 Version 20H2 10.0 | 10.0.0 → < 10.0.19041.1288 | 10.0.19041.1288 |
Show the 18 other branches Hide the 18 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server version 20H2 10.0 | 10.0.0 → < 10.0.19042.1288 | 10.0.19042.1288 |
| Windows 11 version 21H2 10.0 | 10.0.0 → < 10.0.22000.258 | 10.0.22000.258 |
| Windows 10 Version 1507 10.0 | 10.0.0 → < 10.0.10240.19086 | 10.0.10240.19086 |
| Windows 10 Version 1607 10.0 | 10.0.0 → < 10.0.14393.4704 | 10.0.14393.4704 |
| Windows Server 2016 10.0 | 10.0.0 → < 10.0.14393.4704 | 10.0.14393.4704 |
| Windows Server 2016 (Server Core installation) 10.0 | 10.0.0 → < 10.0.14393.4704 | 10.0.14393.4704 |
| Windows 7 6.1 | 6.1.0 → < 6.1.7601.25740 | 6.1.7601.25740 |
| Windows 7 Service Pack 1 6.1 | 6.1.0 → < 6.1.7601.25740 | 6.1.7601.25740 |
| Windows 8.1 6.3 | 6.3.0 → < 6.3.9600.20144 | 6.3.9600.20144 |
| Windows Server 2008 Service Pack 2 6.0 | 6.0.0 → < 6.0.6003.21251 | 6.0.6003.21251 |
| Windows Server 2008 Service Pack 2 (Server Core installation) 6.0 | 6.0.0 → < 6.0.6003.21251 | 6.0.6003.21251 |
| Windows Server 2008 Service Pack 2 6.0 | 6.0.0 → < 6.0.6003.21251 | 6.0.6003.21251 |
| Windows Server 2008 R2 Service Pack 1 6.1 | 6.1.0 → < 6.1.7601.25740 | 6.1.7601.25740 |
| Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.0 | 6.0.0 → < 6.1.7601.25740 | 6.1.7601.25740 |
| Windows Server 2012 6.2 | 6.2.0 → < 6.2.9200.23490 | 6.2.9200.23490 |
| Windows Server 2012 (Server Core installation) 6.2 | 6.2.0 → < 6.2.9200.23490 | 6.2.9200.23490 |
| Windows Server 2012 R2 6.3 | 6.3.0 → < 6.3.9600.20144 | 6.3.9600.20144 |
| Windows Server 2012 R2 (Server Core installation) 6.3 | 6.3.0 → < 6.3.9600.20144 | 6.3.9600.20144 |
References
- portal.msrc.microsoft.com portal.msrc.microsoft.com
- packetstormsecurity.com packetstormsecurity.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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