What is CVE-2022-40733?

CVE-2022-40733 is a medium-severity vulnerability in Microsoft Windows, classified under NULL Pointer Dereference. CVSS score: 5.0/10. Published 2024-12-18.

How severe is CVE-2022-40733?

Medium severity. CVSS v3 base score is 5.0 out of 10.

NULL pointer dereference in Microsoft Windows

CVE-2022-40733

An access violation vulnerability exists in the DirectComposition functionality win32kbase.sys driver version 10.0.22000.593 as part of Windows 11 version 22000.593 and version 10.0.20348.643 as part of Windows Server 2022 version 20348.643. A specially-crafted set of syscalls can lead to a reboot. An unprivileged user can run specially-crafted code to trigger Denial Of Service.

EPSS: 0.008 (53.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H.

Affected products

Microsoft Windows — versions Build 22000.593
Microsoft Windows_11_21h2 — versions 10.0.22000.593
Microsoft Windows_server_2022 — versions 10.0.20348.643

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

talos-cna@cisco.com (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-40733?: CVE-2022-40733 is a medium-severity vulnerability in Microsoft Windows, classified under NULL Pointer Dereference. CVSS score: 5.0/10. Published 2024-12-18.
How severe is CVE-2022-40733?: Medium severity. CVSS v3 base score is 5.0 out of 10.