CVE-2026-20811
Unknown
Unknown - Not Provided
Type Confusion in Windows Win32K Enables Local Privilege Escalation
Publication date: 2026-01-13
Last updated on: 2026-01-13
Assigner: Microsoft Corporation
Description
Description
Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | windows_win32k | *-* |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-843 | The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. |
| CWE-822 | The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a type confusion issue in the Windows Win32K component called ICOMP, where an authorized attacker can access a resource using an incompatible type, leading to a local elevation of privileges. [1]
How can this vulnerability impact me? :
An authorized attacker can exploit this vulnerability to elevate their privileges locally on a Windows system, potentially gaining higher-level access than intended. [1]
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