CVE-2026-70274

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Use After Free in Windows Bind Filter Driver Allows Local Privilege Escalation

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70274

EUVD

EUVD-2026-99264

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability is a use after free issue in the Windows Bind Filter Driver. An authorized attacker can exploit this to elevate their privileges locally on an affected system.

Detection Guidance

This vulnerability involves a use-after-free issue in the Windows Bind Filter Driver. Detection typically requires monitoring for unusual privilege escalation events or crashes in the driver. Check Windows Event Viewer for system crashes or errors related to the Bind Filter Driver. Use tools like Process Explorer or Windows Defender to inspect driver behavior and system logs for anomalies.

Impact Analysis

An attacker with local access could exploit this to gain higher privileges, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights.

Compliance Impact

This vulnerability allows local privilege escalation, which could enable unauthorized access to sensitive data or system functions. Such access may violate compliance requirements under GDPR (data protection) and HIPAA (health information security) by exposing personal or protected health information.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Bind Filter Driver vulnerability. Monitor Microsoft's update guide for specific patches and install them promptly.

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