What is CVE-2022-40732?

CVE-2022-40732 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-2022-40732?

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

NULL pointer dereference in Microsoft Windows

CVE-2022-40732

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.

Published 2024-12-18 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.008 (53.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

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

talosintelligence.com/vulnerability_reports/TALOS-2022-1514 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-40732?: CVE-2022-40732 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-2022-40732?: Medium severity. CVSS v3 base score is 5.0 out of 10.