8.8

CVE-2023-21674

Warning

Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability

Data is provided by the National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 1507 Version < 10.0.10240.19685
Microsoft ≫ Windows 10 1607 Version < 10.0.14393.5648
Microsoft ≫ Windows 10 1809 Version < 10.0.17763.3887
Microsoft ≫ Windows 10 20h2 Version < 10.0.19042.2486
Microsoft ≫ Windows 10 21h2 Version < 10.0.19044.2486
Microsoft ≫ Windows 10 22h2 Version < 10.0.19045.2486
Microsoft ≫ Windows 11 21h2 Version < 10.0.22000.1455
Microsoft ≫ Windows 11 22h2 Version < 10.0.22621.1105
Microsoft ≫ Windows Rt 8.1 Version-
Microsoft ≫ Windows Server 2016 Version < 10.0.14393.5648
Microsoft ≫ Windows Server 2019 Version < 10.0.17763.3887
Microsoft ≫ Windows Server 2022 Version < 10.0.20348.1487

10.01.2023: CISA Known Exploited Vulnerabilities (KEV) Catalog

Microsoft Windows Advanced Local Procedure Call (ALPC) Privilege Escalation Vulnerability

Vulnerability

Microsoft Windows Advanced Local Procedure Call (ALPC) contains an unspecified vulnerability that allows for privilege escalation.

Description

Apply updates per vendor instructions.

Required actions
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 9.98% 0.928
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
secure@microsoft.com 8.8 2 6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.