Is CVE-2022-32477 actively exploited?

No active exploitation of CVE-2022-32477 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-32477 be exploited remotely?

No. CVE-2022-32477 requires local access to exploit.

What is the CVSS score of CVE-2022-32477?

CVE-2022-32477 has a CVSS score of 7.0 (HIGH).

HOME VULNERABILITIESCVE-2022-32477

HIGH

CVE-2022-32477

CWE-367Published: February 15, 2023· Updated: Jun 17, 2026

7.0

CVSS v3.1

Official Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the FvbServicesRuntimeDxe shared buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated using IOMMU protection for the ACPI runtime memory used for the command buffer. This attack can be mitigated by copying the firmware block services data to SMRAM before checking it.

NVD Source

Technical Analysis

CVE-2022-32477 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.0.