CVE-2023-31347

Name: CVE-2023-31347
Creator: NVD / NIST
Published: 2024-02-13T20:15:52.79+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2023-31347 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. Due to a code bug in Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a guest to observe an incorrect TSC when Secure TSC is enabled potentially resulting in a loss of guest integrity. . EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

Due to a code bug in Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a guest to observe an incorrect TSC when Secure TSC is enabled potentially resulting in a loss of guest integrity.

Metrics

CVSS 3.1

4.9/10

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

EPSS Probability

0.46%

36.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-682

Affected Software

Vendor	Product	Versions
Amd	Epyc 7773x Firmware	< milanpi_1.0.0.c
Amd	Epyc 7763 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7713 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7713p Firmware	All versions
Amd	Epyc 7663 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7663p Firmware	< milanpi_1.0.0.c
Amd	Epyc 7643 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7643p Firmware	< milanpi_1.0.0.c
Amd	Epyc 7573x Firmware	< milanpi_1.0.0.c
Amd	Epyc 75f3 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7543 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7543p Firmware	< milanpi_1.0.0.c
Amd	Epyc 7513 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7453 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7473x Firmware	< milanpi_1.0.0.c
Amd	Epyc 74f3 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7443 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7443p Firmware	< milanpi_1.0.0.c
Amd	Epyc 7413 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7373x Firmware	< milanpi_1.0.0.c
Amd	Epyc 73f3 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7343 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7313 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7313p Firmware	< milanpi_1.0.0.c
Amd	Epyc 7303 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7303p Firmware	< milanpi_1.0.0.c
Amd	Epyc 72f3 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7203 Firmware	< milanpi_1.0.0.c
Amd	Epyc 7203p Firmware	< milanpi_1.0.0.c
Amd	Epyc 8024p Firmware	< genoapi_1.0.0.b
Amd	Epyc 8024pn Firmware	< genoapi_1.0.0.b
Amd	Epyc 8124p Firmware	< genoapi_1.0.0.b
Amd	Epyc 8124pn Firmware	< genoapi_1.0.0.b
Amd	Epyc 8224p Firmware	< genoapi_1.0.0.b
Amd	Epyc 8224pn Firmware	< genoapi_1.0.0.b
Amd	Epyc 8324p Firmware	< genoapi_1.0.0.b
Amd	Epyc 8324pn Firmware	< genoapi_1.0.0.b
Amd	Epyc 8434p Firmware	< genoapi_1.0.0.b
Amd	Epyc 8434pn Firmware	< genoapi_1.0.0.b
Amd	Epyc 8534p Firmware	< genoapi_1.0.0.b
Amd	Epyc 8534pn Firmware	< genoapi_1.0.0.b
Amd	Epyc 9124 Firmware	< genoapi_1.0.0.b
Amd	Epyc 9224 Firmware	< genoapi_1.0.0.b
Amd	Epyc 9254 Firmware	< genoapi_1.0.0.b
Amd	Epyc 9334 Firmware	< genoapi_1.0.0.b
Amd	Epyc 9354 Firmware	< genoapi_1.0.0.b
Amd	Epyc 9354p Firmware	< genoapi_1.0.0.b
Amd	Epyc 9174f Firmware	< genoapi_1.0.0.b
Amd	Epyc 9184x Firmware	< genoapi_1.0.0.b
Amd	Epyc 9274f Firmware	< genoapi_1.0.0.b

Showing 50 of 62 affected configurations. See NVD for the full list.

References

Timeline

Published: Feb 13, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-31347?

How severe is CVE-2023-31347?

CVE-2023-31347 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2023-31347?

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-2023-31347?

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

Scan your code now

Source: NVD / NIST