Is CVE-2023-31345 actively exploited?

No active exploitation of CVE-2023-31345 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-31345 be exploited remotely?

No. CVE-2023-31345 requires local access to exploit.

What is the CVSS score of CVE-2023-31345?

CVE-2023-31345 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2023-31345

HIGH

CVE-2023-31345

CWE-1274Published: February 12, 2025· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

Improper input validation in the SMM handler may allow a privileged attacker to overwrite SMRAM, potentially leading to arbitrary code execution.

NVD Source

Technical Analysis

CVE-2023-31345 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.