CVEvulnerability

CVE-2023-21674

8.8 HIGH Known exploited Published 2023-01-10 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

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

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

Added to KEV
2023-01-10
Remediation due
2023-01-31
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-21674; https://nvd.nist.gov/vuln/detail/CVE-2023-21674
Status
Analyzed
Published
2023-01-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-416

Description

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

Affected configurations

• microsoft windows 10 1507 (< 10.0.10240.19685) • microsoft windows 10 1607 (< 10.0.14393.5648) • microsoft windows 10 1809 (< 10.0.17763.3887) • microsoft windows 10 20h2 (< 10.0.19042.2486) • microsoft windows 10 21h2 (< 10.0.19044.2486) • microsoft windows 10 22h2 (< 10.0.19045.2486) • microsoft windows 11 21h2 (< 10.0.22000.1455) • microsoft windows 11 22h2 (< 10.0.22621.1105) • microsoft windows rt 8.1 • microsoft windows server 2012 r2 • microsoft windows server 2016 (< 10.0.14393.5648) • microsoft windows server 2019 (< 10.0.17763.3887) • microsoft windows server 2022 (< 10.0.20348.1487)

Related

Weakness · CWE (1)

References