CVE-2023-20566

Name: CVE-2023-20566
Creator: NVD / NIST
Published: 2023-11-14T19:15:15.837+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2023-20566 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory integrity.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory integrity.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.37%

28.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Amd	Epyc 7763 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7713p Firmware	< milanpi_1.0.0.b
Amd	Epyc 7713 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7663p Firmware	< milanpi_1.0.0.b
Amd	Epyc 7663 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7643p Firmware	< milanpi_1.0.0.b
Amd	Epyc 7773x Firmware	< milanpi_1.0.0.b
Amd	Epyc 7643 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7573x Firmware	< milanpi_1.0.0.b
Amd	Epyc 75f3 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7543p Firmware	< milanpi_1.0.0.b
Amd	Epyc 7543 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7513 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7473x Firmware	< milanpi_1.0.0.b
Amd	Epyc 7453 Firmware	< milanpi_1.0.0.b
Amd	Epyc 74f3 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7443p Firmware	< milanpi_1.0.0.b
Amd	Epyc 7443 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7413 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7373x Firmware	< milanpi_1.0.0.b
Amd	Epyc 73f3 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7343 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7313p Firmware	< milanpi_1.0.0.b
Amd	Epyc 7313 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7303p Firmware	< milanpi_1.0.0.b
Amd	Epyc 7303 Firmware	< milanpi_1.0.0.b
Amd	Epyc 72f3 Firmware	< milanpi_1.0.0.b
Amd	Epyc 7203p Firmware	< milanpi_1.0.0.b
Amd	Epyc 7203 Firmware	< milanpi_1.0.0.b
Amd	Epyc 9654p Firmware	< genoapi_1.0.0.7
Amd	Epyc 9654 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9634 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9554p Firmware	< genoapi_1.0.0.7
Amd	Epyc 9554 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9534 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9474f Firmware	< genoapi_1.0.0.7
Amd	Epyc 9454p Firmware	< genoapi_1.0.0.7
Amd	Epyc 9454 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9374f Firmware	< genoapi_1.0.0.7
Amd	Epyc 9354p Firmware	< genoapi_1.0.0.7
Amd	Epyc 9354 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9334 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9274f Firmware	< genoapi_1.0.0.7
Amd	Epyc 9254 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9224 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9174f Firmware	< genoapi_1.0.0.7
Amd	Epyc 9124 Firmware	< genoapi_1.0.0.7
Amd	Epyc 9684x Firmware	< genoapi_1.0.0.7
Amd	Epyc 9384x Firmware	< genoapi_1.0.0.7
Amd	Epyc 9184x Firmware	< genoapi_1.0.0.7

Showing 50 of 65 affected configurations. See NVD for the full list.

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002Vendor Advisory

Timeline

Published: Nov 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-20566?

Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory integrity.

How severe is CVE-2023-20566?

CVE-2023-20566 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2023-20566?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-20566?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST