Is CVE-2022-33905 actively exploited?

No active exploitation of CVE-2022-33905 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-33905 be exploited remotely?

No. CVE-2022-33905 requires local access to exploit.

What is the CVSS score of CVE-2022-33905?

CVE-2022-33905 has a CVSS score of 7.0 (HIGH).

HOME VULNERABILITIESCVE-2022-33905

HIGH

CVE-2022-33905

CWE-367Published: November 15, 2022· Updated: Jun 17, 2026

7.0

CVSS v3.1

Official Description

DMA transactions which are targeted at input buffers used for the AhciBusDxe software SMI handler could cause SMRAM corruption (a TOCTOU attack). DMA transactions which are targeted at input buffers used for the software SMI handler used by the AhciBusDxe driver could cause SMRAM corruption through a TOCTOU attack. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group, Fixed in kernel 5.2: 05.27.23, kernel 5.3: 05.36.23, kernel 5.4: 05.44.23, kernel 5.5: 05.52.23 https://www.insyde.com/security-pledge/SA-2022047

NVD Source

Technical Analysis

CVE-2022-33905 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.