CVE-2023-20514

HighCVSS 8.7/10Last modified Jun 17, 2026

Description

Improper handling of parameters in the AMD Secure Processor (ASP) could allow a privileged attacker to pass an arbitrary memory value to functions in the trusted execution environment resulting in arbitrary code execution

Metrics

CVSS 4.0 8.7/10CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Feb 11, 2026
Last modified
Jun 17, 2026
NVD status
Deferred

Related CVEs from 2023

CVE-2023-205155.7Improper access control in the fTPM driver in the trusted OS could allow a privileged attacker to corrupt system memory, potentially leadingCVE-2023-205163.3Improper handling of insufficiency privileges in the ASP could allow a privileged attacker to modify Translation Map Registers (TMRs) potentCVE-2023-205181.9Incomplete cleanup in the ASP may expose the Master Encryption Key (MEK) to a privileged attacker with access to the BIOS menu or UEFI shellCVE-2023-205193.3A Use-After-Free vulnerability in the management of an SNP guest context page may allow a malicious hypervisor to masquerade as the guest's CVE-2023-20528.8A vulnerability classified as critical was found in Campcodes Advanced Online Voting System 1.0. Affected by this vulnerability is an unknowCVE-2023-205209.8Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun CVE-2023-205215.7TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, poCVE-2023-205227.5Insufficient input validation in ASP may allow an attacker with a malicious BIOS to potentially cause a denial of service.CVE-2023-205235.7TOCTOU in the ASP may allow a physical attacker to write beyond the buffer bounds, potentially leading to a loss of integrity or denial of sCVE-2023-205247.5An attacker with a compromised ASP could possibly send malformed commands to an ASP on another CPU, resulting in an out of bounds write, potCVE-2023-205256.5Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory outside the bounds of a mapped reCVE-2023-205264.6Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose the contents of ASP memo
CVE-2023-20514: High severity, CVSS 8.7 | Vulnix