Windows 11 23h2
CVE-2026-20838
MEDIUM
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information locally.
AnalysisAI
Sensitive information disclosure in the Windows Kernel error message handling allows local authenticated users to read confidential data they shouldn't have access to. The vulnerability affects Windows and Windows Server 2022/2025 platforms and requires valid credentials to exploit, limiting its attack surface. No patch is currently available for this medium-severity issue.
Technical ContextAI
Classified as CWE-209 (Error Message Information Leak). Affects Windows 11 23H2. Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information locally.
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-209 – Error Message Information Leak
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today