8.8
High
Exploited
CVE-2023-21674 Microsoft Windows Advanced Local Procedure Call (ALPC) Privilege Escalation Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Not observed so far
Weakness
CWE-416
Description
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 Version 1809 10.0 | 10.0.0 → < 10.0.17763.3887 | 10.0.17763.3887 |
| Windows Server 2019 10.0 | 10.0.17763.0 → < 10.0.17763.3887 | 10.0.17763.3887 |
| Windows Server 2019 (Server Core installation) 10.0 | 10.0.17763.0 → < 10.0.17763.3887 | 10.0.17763.3887 |
| Windows Server 2022 10.0 | 10.0.20348.0 → < 10.0.20348.1487 | 10.0.20348.1487 |
| Windows 10 Version 20H2 10.0 | 10.0.0 → < 10.0.19042.2486 | 10.0.19042.2486 |
| Windows 11 version 21H2 10.0 | 10.0.0 → < 10.0.22000.1455 | 10.0.22000.1455 |
| Windows 10 Version 21H2 10.0 | 10.0.19043.0 → < 10.0.19044.2486 | 10.0.19044.2486 |
| Windows 11 version 22H2 10.0 | 10.0.22621.0 → < 10.0.22621.1105 | 10.0.22621.1105 |
| Windows 10 Version 22H2 10.0 | 10.0.19045.0 → < 10.0.19045.2486 | 10.0.19045.2486 |
Show the 7 other branches Hide the 7 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 Version 1507 10.0 | 10.0.10240.0 → < 10.0.10240.19685 | 10.0.10240.19685 |
| Windows 10 Version 1607 10.0 | 10.0.14393.0 → < 10.0.14393.5648 | 10.0.14393.5648 |
| Windows Server 2016 10.0 | 10.0.14393.0 → < 10.0.14393.5648 | 10.0.14393.5648 |
| Windows Server 2016 (Server Core installation) 10.0 | 10.0.14393.0 → < 10.0.14393.5648 | 10.0.14393.5648 |
| Windows 8.1 6.3 | 6.3.0 → < 6.3.9600.20778 | 6.3.9600.20778 |
| Windows Server 2012 R2 6.3 | 6.3.9600.0 → < 6.3.9600.20778 | 6.3.9600.20778 |
| Windows Server 2012 R2 (Server Core installation) 6.3 | 6.3.9600.0 → < 6.3.9600.20778 | 6.3.9600.20778 |
References
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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