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Vulnerability record · CVE-2023-31347 · published 13 February 2024

CVE-2023-31347: Amd epyc 7773x firmware vulnerability

AAmd · Epyc 7773x Firmware

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.  

4.9 CVSS 3.1 Medium EPSS 0.46% · top 62.6% CWE-682 · CWE-682
4.9CVSS 3.1 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
62Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.  

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

Affected products

62 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3007 Broken Link
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3007 Broken Link

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-31347), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.