CVE-2026-33828

Analyzed Analyzed - Analysis Complete

Windows Attestation Privilege Escalation Vulnerability

Publication date: 2026-06-09

Last updated on: 2026-06-10

Assigner: Microsoft Corporation

Description

Trust boundary violation in Windows Attestation allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-06-09

Last Modified

2026-06-10

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2026-33828

EUVD

EUVD-2026-35657

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_10_1607	to 10.0.14393.9234 (exc)
microsoft	windows_10_1607	to 10.0.14393.9234 (exc)
microsoft	windows_10_1809	to 10.0.17763.8880 (exc)
microsoft	windows_10_1809	to 10.0.17763.8880 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7417 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7417 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7417 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7417 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7417 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7417 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7219 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7219 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8655 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8655 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8655 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8655 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_server_2016	to 10.0.14393.9234 (exc)
microsoft	windows_server_2019	to 10.0.17763.8880 (exc)
microsoft	windows_server_2022	to 10.0.20348.5256 (exc)
microsoft	windows_server_2025	to 10.0.26100.32995 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-501	The product mixes trusted and untrusted data in the same data structure or structured message.

Attack-Flow Graph

Executive Summary

This vulnerability is a trust boundary violation in Windows Attestation that allows an authorized attacker to elevate their privileges locally.

Impact Analysis

The vulnerability can lead to an elevation of privilege, meaning an attacker with some level of access can gain higher privileges on the affected system.

This can result in critical impacts including full control over the system, compromising confidentiality, integrity, and availability.

Mitigation Strategies

The vulnerability allows an authorized attacker to elevate privileges locally due to a trust boundary violation in Windows Attestation.

To mitigate this vulnerability, it is recommended to apply the security updates provided by Microsoft as detailed in their official update guide.

Ensure that all Windows systems using Windows Attestation are updated to the latest security patches to prevent exploitation.

Compliance Impact

This vulnerability allows an authorized attacker to elevate privileges locally by exploiting a trust boundary violation in Windows Attestation.

Elevation of privilege vulnerabilities can potentially lead to unauthorized access to sensitive data or systems, which may impact compliance with standards and regulations such as GDPR and HIPAA that require strict access controls and protection of personal or health information.

However, the provided information does not specify direct effects or assessments related to compliance with these standards.

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