How severe is CVE-2023-31315?

CVE-2023-31315 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-31315 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-31315?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-31315 have an EU (EUVD) identifier?

Yes. CVE-2023-31315 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-35626.

When was CVE-2023-31315 published?

CVE-2023-31315 was published on 2024-08-12 and last updated on 2026-06-17.

CVE-2023-31315

CVE-2023-31315 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-35626
Weakness: CWE-94
Published: 2024-08-12
Last modified: 2026-06-17

Description

Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access to modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.

Frequently asked questions

What is CVE-2023-31315?: Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access to modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.
How severe is CVE-2023-31315?: CVE-2023-31315 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-31315 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-31315?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-31315 have an EU (EUVD) identifier?: Yes. CVE-2023-31315 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-35626.
When was CVE-2023-31315 published?: CVE-2023-31315 was published on 2024-08-12 and last updated on 2026-06-17.

References

Other CWE-94 (Code Injection) vulnerabilities

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