CVE-2026-21709
Received Received - Intake
Bypass of Windows Driver Signature Enforcement via Local Privilege Escalation

Publication date: 2026-04-17

Last updated on: 2026-04-20

Assigner: HackerOne

Description
A vulnerability allowing a local attacker with administrator privileges to bypass Windows Driver Signature Enforcement.
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Meta Information
Published
2026-04-17
Last Modified
2026-04-20
Generated
2026-06-16
AI Q&A
2026-04-17
EPSS Evaluated
2026-06-14
NVD
CVE-2026-21709
EUVD
EUVD-2026-23438
Affected Vendors & Products
Currently, no data is known.
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
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Executive Summary

This vulnerability allows a local attacker who already has administrator privileges on a Windows system to bypass the Windows Driver Signature Enforcement mechanism.

Impact Analysis

By bypassing Windows Driver Signature Enforcement, an attacker with administrator access could load unsigned or malicious drivers onto the system, potentially compromising system integrity and security.

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