CVE-2023-31347

MEDIUMNVD 4.94.9—

4.9

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 v3: 4.9
EG Score: 4.9(medium)
EPSS: 14.5%
KEV: Not listed

Published

February 13, 2024

Last Modified

March 17, 2025

References (2)

psirt@amdhttps://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3007
af854a3a-2127-422b-91ae-364da2661108https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3007

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-682Incorrect Calculation

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 08:37 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-31347?

CVE-2023-31347 is a medium vulnerability published on February 13, 2024. 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.

When was CVE-2023-31347 disclosed?

CVE-2023-31347 was first published in the National Vulnerability Database on February 13, 2024, with the most recent update on March 17, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-31347 actively exploited?

CVE-2023-31347 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-31347?

CVE-2023-31347 has a CVSS v3 base score of 4.9 (NVD).

How do I remediate CVE-2023-31347?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-31347, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-31347

📅 Published

🔄 Last Modified

🔗 References (2)