Race condition in Microsoft Windows and Windows Server - CVE-2026-23668

Vulnerability identifier: #VU123708

CSH Severity: Low

CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-23668

CWE-ID: CWE-362

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within the cdd.dll driver in Windows Graphics Component. A local user can exploit the race and escalate privileges on the system.

Microsoft Windows
Windows Server

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7058, 10 22H2 10.0.19045.7058, 10 1607 10.0.14393.8957, 10 1809 10.0.17763.8511, 11 23H2 10.0.22631.6783, 11 24H2 10.0.26100.7979
Windows Server - addressed in versions 2012 R2 6.3.9600.23074, 2012 6.2.9200.25973, 2016 10.0.14393.8957, 2019 10.0.17763.8511, 2022 23H2 10.0.25398.2207, 2022 10.0.20348.4830, 2022 10.0.20348.4893

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23668
• https://www.zerodayinitiative.com/advisories/ZDI-26-178/
• https://www.zerodayinitiative.com/advisories/ZDI-26-180/
• https://www.zerodayinitiative.com/advisories/ZDI-26-179/

• Multiple vulnerabilities in Microsoft Windows Graphics Component