CVE-2026-20929
Unknown
Unknown - Not Provided
Improper Access Control in Windows HTTP.sys Enables Privilege Escalation
Publication date: 2026-01-13
Last updated on: 2026-01-13
Assigner: Microsoft Corporation
Description
Description
Improper access control in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | http.sys | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-284 | The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an improper access control issue in Windows HTTP.sys that allows an authorized attacker to elevate their privileges over a network. [1]
How can this vulnerability impact me? :
An attacker who is already authorized can exploit this vulnerability to gain higher privileges, potentially leading to full control over the affected system. [1]
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