CVE-2023-31347 | BDVDB-2026-224385 Detail

AMD3rd Gen AMD EPYC™ Processors

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-682 Incorrect Calculation

References#

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

Exploit#

No public exploit known

History#

Version 12024-02-13Record published in the CVE List.
Version 22025-03-17Most recent update recorded in the CVE List.

Published

Published: 2024-02-13
Last modified: 2025-03-17

Vendor information

Vendor: AMD
Product: 3rd Gen AMD EPYC™ Processors

All AMD vulnerabilities

Score

4.9 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 40.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
various
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

4.9 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	High
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).