CVE-2026-70270

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Untrusted Pointer Dereference in Windows Container Isolation FS Filter Driver

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Untrusted pointer dereference in Windows Container Isolation FS 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

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70270

EUVD

EUVD-2026-99615

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1607 10.0.14393.0
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
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 2016 10.0.14393.0
Microsoft	Windows	Server 2016 (Server Core installation) 10.0.14393.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
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-822	The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.

Attack-Flow Graph

Executive Summary

This is a local elevation of privilege vulnerability in the Windows Container Isolation FS Filter Driver. It occurs due to an untrusted pointer dereference, allowing an authorized attacker with local access to gain higher privileges on the system.

Impact Analysis

An attacker with local access could exploit this to elevate their privileges, potentially gaining control over the system or performing unauthorized actions. This could lead to data theft, system compromise, or further network infiltration.

Compliance Impact

This vulnerability allows local privilege escalation through an untrusted pointer dereference in Windows Container Isolation FS Filter Driver. Such attacks could enable unauthorized access to sensitive systems, potentially violating data protection requirements under GDPR and HIPAA by exposing or altering protected health or personal information.

Mitigation Strategies

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

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