CVE-2023-20596

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

Improper input validation in the SMM Supervisor may allow an attacker with a compromised SMI handler to gain Ring0 access potentially leading to arbitrary code execution.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published: Nov 14, 2023
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2023

CVE-2023-205975.5Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.CVE-2023-205987.8An improper privilege management in the AMD Radeon™ Graphics driver may allow an authenticated attacker to craft an IOCTL request to gain I/CVE-2023-205997.9Improper register access control in ASP may allow a privileged attacker to perform unauthorized access to ASP’s Crypto Co-Processor (CCP) re CVE-2023-20607.5Weak Password Requirements vulnerability in FTP function on Mitsubishi Electric Corporation MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 CVE-2023-206014.6Improper input validation within RAS TA Driver can allow a local attacker to access out-of-bounds memory, potentially resulting in a denial-CVE-2023-206026.7In ged, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with System exe CVE-2023-206046.7In ged, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System CVE-2023-206054.4In keyinstall, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with Sy CVE-2023-206064.4In apusys, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System CVE-2023-206076.4In ccu, there is a possible memory corruption due to a race condition. This could lead to local escalation of privilege with System executio CVE-2023-206086.4In display drm, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System exe CVE-2023-206094.4In ccu, there is a possible out of bounds read due to a logic error. This could lead to local information disclosure with System execution p