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CVE-2023-20599

Published: Jun 10, 2025Updated: Nov 21, 2025 Sources: CVE List NVDCWE-1262
NVD MITRE
7.9CVSSHIGH
EPSS Score
0.2%
Top 94.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

Improper register access control in ASP may allow a privileged attacker to perform unauthorized access to ASP’s Crypto Co-Processor (CCP) registers from x86 resulting in potential loss of control of cryptographic key pointer/index leading to loss of integrity or confidentiality.

CVSS Vector Breakdown

AV:LAC:LPR:HUI:NS:CC:HI:HA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-1262

Affected Products

AMD EPYC™ 7002 Series ProcessorsAMDHardware Firmware
AMD Ryzen™ Threadripper™ 3000 ProcessorsAMDHardware Firmware
AMD Ryzen™ Threadripper™ PRO 3000 WX ProcessorsAMDHardware Firmware
AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ GraphicsAMDHardware Firmware
AMD EPYC™ Embedded 7002 Series ProcessorsAMDHardware Firmware
amdcommercialUSHardware Firmwareaka advanced micro devices
and 5 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7039.html
amd.com

Timeline

Published
Jun 10, 2025
Last Updated
Nov 21, 2025

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