Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-20838 Details

Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information locally.

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20838	[email protected]	Vendor Advisory

CWE-ID	CWE Name	Source
CWE-209	Generation of Error Message Containing Sensitive Information	[email protected]

Product	Versions
microsoft windows 11 23h2	< 10.0.22631.6491
CPE cpe:2.3:o:microsoft:windows_11_23h2:::::::: Remediation No remediation found in references.
microsoft windows 11 24h2	< 10.0.26100.7623
CPE cpe:2.3:o:microsoft:windows_11_24h2:::::::: Remediation No remediation found in references.
microsoft windows 11 25h2	< 10.0.26200.7623
CPE cpe:2.3:o:microsoft:windows_11_25h2:::::::: Remediation No remediation found in references.
microsoft windows server 2022	< 10.0.20348.4648
CPE cpe:2.3:o:microsoft:windows_server_2022:::::::: Remediation No remediation found in references.
microsoft windows server 2022 23h2	< 10.0.25398.2092
CPE cpe:2.3:o:microsoft:windows_server_2022_23h2:::::::: Remediation No remediation found in references.
microsoft windows server 2025	< 10.0.26100.32230
CPE cpe:2.3:o:microsoft:windows_server_2025:::::::: Remediation No remediation found in references.

5 change records found show changes

QUICK INFO