BaseFortify

Publication date: 2026-04-14

Last updated on: 2026-06-17

Assigner: Microsoft Corporation

Description

Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-04-14

Last Modified

2026-06-17

Generated

2026-07-06

AI Q&A

2026-04-14

EPSS Evaluated

2026-07-05

NVD

CVE-2026-33825

EUVD

EUVD-2026-22643

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	defender_antimalware_platform	to 4.18.26030.3011 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-1220	The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets.

Attack-Flow Graph

Executive Summary

This vulnerability is caused by insufficient granularity of access control in Microsoft Defender. It allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

The impact of this vulnerability is an elevation of privilege, meaning an attacker who already has some level of access can gain higher privileges. This can lead to full control over the affected system, potentially allowing the attacker to execute arbitrary code, access sensitive data, or disrupt system operations.

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