Is CVE-2022-33984 actively exploited?

No active exploitation of CVE-2022-33984 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-33984 be exploited remotely?

No. CVE-2022-33984 requires local access to exploit.

What is the CVSS score of CVE-2022-33984?

CVE-2022-33984 has a CVSS score of 7.0 (HIGH).

HOME VULNERABILITIESCVE-2022-33984

HIGH

CVE-2022-33984

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 SdMmcDevice software SMI handler could cause SMRAM corruption through a TOCTOU attack. DMA transactions which are targeted at input buffers used for the software SMI handler used by the SdMmcDevice 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. This was fixed in kernel 5.2: 05.27.25, kernel 5.3: 05.36.25, kernel 5.4: 05.44.25, kernel 5.5: 05.52.25 https://www.insyde.com/security-pledge/SA-2022054

NVD Source

Technical Analysis

CVE-2022-33984 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.