CVE-2023-21674
KEVMicrosoft Windows Advanced Local Procedure Call (ALPC) Privilege Escalation Vulnerability
Description
Microsoft Windows Advanced Local Procedure Call (ALPC) contains an unspecified vulnerability that allows for privilege escalation.
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
CVSS 3.1 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HPublishedJan 10, 2023
Last modifiedJun 17, 2026
Added to KEVJan 10, 2023
Remediation dueJan 31, 2023
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21674PatchVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-21674US Government Resource
0 recent articles mention this CVE
77
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1365 days
- CVSS
- 8.8 HIGH
- EPSS (30-day exploit probability)
- 34.2% · top 2% of all CVEs
- Weakness
- CWE-416
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.