AMD Secure Processor (ASP) Vulnerabilities
Summary
AMD has identified two potential security vulnerabilities in the AMD Secure Processor (ASP) firmware through internal security audits. In both cases, the issues relate to insufficient validation of inputs provided to privileged firmware routines. An attacker with access to the affected interfaces may be able to supply inputs that are not fully validated prior to use, which may lead to unintended firmware behavior.
AMD has made updated firmware available that is intended to help mitigate these potential vulnerabilities.
CVE Details
Refer to Glossary for explanation of terms
CVE |
CVE Description |
CVSS Score |
CVE-2026-0436 |
Insufficient parameter sanitization in the AMD Secure Processor (ASP) trusted execution environment (TEE) SPDM driver could allow an attacker to supply malicious input, potentially resulting in loss of platform integrity, memory leakage, or denial of service. |
6.9 CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') |
CVE-2023-20539 |
An out-of-bounds read in the AMD Secure Processor (ASP) could allow a privileged attacker to read data from bootloader memory, potentially resulting in loss of confidentiality. |
6.7 CWE-125: Out-of-bounds Read |
Specific CVSS scores may change subject to your implementation. We encourage you to calculate CVSS scores independently for your system.
Affected Products and Mitigation
AMD recommends updating to the Platform Initialization (PI) firmware version indicated below (note the PI firmware versions were released by AMD to the Original Equipment Manufacturers (OEM) on the dates listed below). Please contact your OEM for the BIOS update specific to your product(s).
*Note: Products believed to not be affected by the listed CVEs are not included.
AMD EPYC™ Series Processors
AMD EPYC™ 7001 Series Processors |
CVE-2023-20539 |
NaplesPI 100G |
2021-07-22 |
AMD EPYC™ 7002 Series Processors |
CVE-2023-20539 |
RomePI 100C |
2021-07-22 |
AMD EPYC™ 7003 Series Processors |
CVE-2023-20539 |
MilanPI 1004 |
2021-06-25 |
AMD EPYC™ 9005 Series Processors |
CVE-2026-0436 |
TurinPI_1.0.0.8 |
2025-11-26 |
AMD Instinct™ Accelerators
Product |
CVE ID |
Mitigation |
Mitigation Release Date |
AMD Instinct™ MI300C |
CVE-2026-0436 |
MI300C 1.0.0.3 |
2025-12-10 |
AMD EPYC™ Embedded Series Processors
Product |
CVE ID |
Mitigation |
Mitigation Release Date |
AMD EPYC™ Embedded 3000 Series Processors |
CVE-2023-20539 |
SnowyOwl PI 1107 |
2021-10-31 |
AMD EPYC™ Embedded 7002 Series Processors |
CVE-2023-20539 |
EmbRomePI-SP3 1.0.0.6 |
2021-10-31 |
AMD EPYC™ Embedded 7003 Series Processors |
CVE-2023-20539 |
EmbMilanPI-SP3 1.0.0.2 |
2021-10-31 |
AMD EPYC™ Embedded 9005 Series Processors |
CVE-2026-0436 |
EmbeddedTurinPI_SP5_1004 |
2026-04-13 |
Acknowledgement
Internally reported
Revisions
| Revision Date | Description |
| 2026-11-10 | Initial version |
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