Cyber Resilience

CVE-2022-40733

MediumPublic PoC

Published: 18 December 2024

Published
18 December 2024
Modified
26 August 2025
KEV Added
Patch
CVSS Score v3.1 5.0 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
EPSS Score 0.0041 61.8th percentile
Risk Priority 10 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-40733 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Microsoft Windows 11 21H2. Its CVSS base score is 5.0 (Medium).

Operationally, ranked in the top 38.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

more

reboot. An unprivileged user can run specially-crafted code to trigger Denial Of Service.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

microsoft
windows 11 21h2
10.0.22000.593
microsoft
windows server 2022
10.0.20348.643

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References