Is CVE-2023-47252 actively exploited?

No active exploitation of CVE-2023-47252 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-47252 be exploited remotely?

No. CVE-2023-47252 requires local access to exploit.

What is the CVSS score of CVE-2023-47252?

CVE-2023-47252 has a CVSS score of 6.3 (MEDIUM).

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MEDIUM

CVE-2023-47252

CWE-787Published: April 26, 2024· Updated: Jun 17, 2026

6.3

CVSS v3.1

Official Description

An issue was discovered in PnpSmm in Insyde InsydeH2O with kernel 5.0 through 5.6. There is a possible out-of-bounds access in the SMM communication buffer, leading to tampering. The PNP-related SMI sub-functions do not verify data size before getting it from the communication buffer, which could lead to possible circumstances where the data immediately following the command buffer could be destroyed with a fixed value. This is fixed in kernel 5.2 v05.28.45, kernel 5.3 v05.37.45, kernel 5.4 v05.45.45, kernel 5.5 v05.53.45, and kernel 5.6 v05.60.45.

NVD Source

Technical Analysis

CVE-2023-47252 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low 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), availability disruption (denial of service), with a CVSS base score of 6.3.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.