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High severity · published Jan 10, 2023
CVE-2023-21674
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
In wildKEV
8.8
CVSS
34.2%
EPSS
Yes
On KEV
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)34.2% · higher than 98% of CVEs
Exploited in the wildYes
CISA KEVListed Jan 10, 2023
Federal remediation dueJan 31, 2023
Ransomware campaign useNot known
Affected products
Which versions
WI
Windows · Microsoft
All versions, or not specified · source: KEV
W1
Windows 10 Version 1507 · Microsoft
10.0.10240.0 before 10.0.10240.19685 · source: vendor
W1
Windows 10 Version 1607 · Microsoft
10.0.14393.0 before 10.0.14393.5648 · source: vendor
W1
Windows 10 Version 1809 · Microsoft
10.0.17763.0 before 10.0.17763.3887; 10.0.0 before 10.0.17763.3887 · source: vendor
W1
Windows 10 Version 20H2 · Microsoft
10.0.0 before 10.0.19042.2486 · source: vendor
W1
Windows 10 Version 21H2 · Microsoft
10.0.19043.0 before 10.0.19044.2486 · source: vendor
W1
Windows 10 Version 22H2 · Microsoft
10.0.19045.0 before 10.0.19045.2486 · source: vendor
W1
Windows 11 version 21H2 · Microsoft
10.0.0 before 10.0.22000.1455 · source: vendor
W1
Windows 11 version 22H2 · Microsoft
10.0.22621.0 before 10.0.22621.1105 · source: vendor
W8
Windows 8.1 · Microsoft
6.3.0 before 6.3.9600.20778 · source: vendor
WS
Windows Server 2012 R2 · Microsoft
6.3.9600.0 before 6.3.9600.20778 · source: vendor
WS
Windows Server 2012 R2 (Server Core installation) · Microsoft
6.3.9600.0 before 6.3.9600.20778 · source: vendor
Affected product
WI
Windows
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-21674
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-21674
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674
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